Job Analysis & Design

Chapter 11
Job and Work-Design Analytics

Graduate Program in HR Management
Job Analysis & Design   •   Graduate

Job and Work-Design Analytics

Introduction

Job analysis and work design increasingly depend on evidence rather than description alone. Traditional job analysis asks what employees do, how tasks are performed, and what knowledge, skills, abilities, and other characteristics (KSAOs) are required. Contemporary analytics extends these questions: Which tasks consume the most time? Which activities create value or risk? Where are capability shortages concentrated? Does a redesign improve performance, employee experience, safety, or adaptability?

Job and work-design analytics is the systematic use of qualitative and quantitative evidence to understand work, evaluate alternatives, and support decisions about jobs, teams, processes, and technology. It does not replace professional judgment. Rather, it makes assumptions visible, permits comparison, and reduces reliance on anecdote.

A central principle is that association is not causation. If productivity rises after a redesign, the improvement may reflect the redesign, seasonal demand, new technology, staffing changes, learning, or measurement effects. Sound analytics therefore combines descriptive evidence, appropriate comparison designs, reliability assessment, and cautious interpretation.

Learning Objectives

By the end of this chapter, the reader should be able to:

  1. Distinguish job analysis, work design, and job and work-design analytics.
  2. Select and interpret descriptive statistics for task and workload data.
  3. Construct task-rating matrices and evaluate rating reliability.
  4. Explain the use and limitations of factor analysis and cluster analysis.
  5. Conduct a basic skills-gap analysis and interpret workload indicators.
  6. Design a managerial dashboard that supports decisions without encouraging metric gaming.
  7. Evaluate redesign outcomes using credible evidence and appropriately qualified causal claims.
  8. Address validity, fairness, privacy, governance, and ethical risks in workforce analytics.

1. From Job Descriptions to Evidence-Based Work Design

A job description is an organizational document. A job analysis is an evidence-gathering process. Work design concerns the arrangement of tasks, responsibilities, information, relationships, technologies, autonomy, and resources through which work is performed. Analytics connects these domains by converting observations and ratings into interpretable evidence.

The unit of analysis must be specified before data collection. Common units include:

  • Task: A recognizable activity, such as verifying an invoice.
  • Duty: A related group of tasks, such as accounts-payable administration.
  • Job: A position or role performed by one or more employees.
  • Work process: Interdependent activities crossing job boundaries.
  • Team or work system: People, technologies, rules, and resources operating together.
  • Employee experience: Perceptions of autonomy, demands, support, meaning, and strain.

A task may be analyzed through several dimensions: frequency, duration, importance, difficulty, criticality, discretion, variability, error consequences, learning requirements, and technology dependence. The same task can be frequent but low in importance, or infrequent but safety-critical. A single average score can hide this distinction.

Theoretical foundations

Several theories guide interpretation:

  • Job Characteristics Model: Skill variety, task identity, task significance, autonomy, and feedback are proposed to influence experienced meaningfulness, responsibility, knowledge of results, motivation, satisfaction, and performance. The model is useful for diagnosing motivational effects but does not imply that every job should maximize every characteristic.
  • Job Demands–Resources model: Demands such as workload, emotional labor, and time pressure may contribute to strain, while resources such as autonomy, support, feedback, and tools may support engagement and performance. Analytics should examine demands and resources together.
  • Sociotechnical systems theory: Work outcomes arise from interactions between social arrangements and technical systems. Optimizing software while ignoring coordination, skills, or authority can worsen performance.
  • Ergonomics and human-factors approaches: Work should fit human capabilities and limitations. Cognitive load, interruptions, physical demands, and error opportunities are relevant design variables.
  • Strategic human resource management: Job and skill information should connect to organizational capabilities, workforce planning, talent development, and changing business requirements.

These theories are complementary, but they make different assumptions. A workload dashboard may identify excessive demand; it does not by itself establish whether autonomy, staffing, process defects, or technology is the primary cause.

2. Building an Analytics-Ready Job-Analysis Dataset

A defensible analysis begins with a job or work-analysis specification. It should state the decision to be supported, the population, the unit of analysis, the observation period, data sources, and the limits of inference.

Data sources

Useful sources include structured questionnaires, interviews, observation, work diaries, workflow logs, system timestamps, quality records, safety reports, training records, performance measures, and employee surveys. Each source captures a different aspect of work. System logs may measure recorded transactions accurately but omit coaching, problem solving, and informal coordination. Interviews reveal tacit work but may be affected by memory and impression management.

Triangulation is therefore preferable: compare at least two sources and investigate discrepancies rather than averaging them away.

Measurement design

Before collecting ratings, define each task operationally. “Manage customer issues” is too broad for reliable measurement; “resolve a customer complaint requiring an exception to standard policy” is more specific. Rating scales should include anchored response options. For example, frequency might range from 1 = less than monthly to 5 = several times per day, while importance might range from 1 = negligible consequence to 5 = critical consequence.

Ratings require attention to:

  • Validity: Does the measure represent the intended construct?
  • Reliability: Would comparable raters or occasions produce similar results?
  • Measurement invariance: Do groups interpret and use the scale similarly?
  • Representativeness: Are employees, shifts, locations, and atypical work included?
  • Missingness: Are missing responses random, or do they reflect sensitive or difficult tasks?

A high response rate does not guarantee valid data. If only high performers respond, or if employees fear surveillance, systematic bias may remain.

3. Descriptive Statistics for Work Data

Descriptive statistics summarize observed data; they do not automatically explain why patterns occur.

For observations x1, x2, …, xn, the arithmetic mean is:

x̄ = (1/n) ∑ᵢ₌₁ⁿ xᵢ

Here, n is the number of observations and x̄ is the sample mean. The mean is appropriate when values are measured on an approximately interval scale and extreme values are not so influential that the result becomes misleading.

The median is the middle ordered value. It is often more informative than the mean for skewed measures such as overtime hours, case duration, or absence episodes. The range is:

Range = xmax − xmin

The sample standard deviation is:

s = √[∑ᵢ₌₁ⁿ(xᵢ − x̄)²/(n − 1)]

The denominator n − 1 provides the usual unbiased estimate of population variance under standard random-sampling assumptions. The standard deviation is expressed in the same units as the original variable.

For a sample of task durations of 8, 10, 10, 12, and 20 minutes, the mean is 12 minutes and the median is 10 minutes. The high value of 20 pulls the mean upward; the median better represents a typical case if the long case is unusual. The sample standard deviation is approximately 4.69 minutes. This example illustrates why analysts should report distributional information rather than a mean alone.

Percentages, rates, and weighted scores

A percentage is:

Percentage = (part/whole) × 100

A rate must include a denominator and time or exposure basis. For example, errors per 1,000 transactions are more interpretable than a raw error count when units process different volumes.

When task ratings are combined, weights must be justified. A simple weighted task score can be expressed as:

Sj = ∑ₖ₌₁ᵐ wₖrⱼₖ, where ∑ₖ₌₁ᵐ wₖ = 1

Here, Sj is the score for task j, rjk is its rating on dimension k, wk is the pre-specified weight, and m is the number of dimensions. This formula is appropriate only when dimensions are sufficiently comparable or have been standardized and when the weighting decision is substantively defensible. A weighted score should not conceal a critical low score; safety-criticality may require a separate rule rather than averaging.

4. Task-Rating Matrices

A task-rating matrix places tasks in rows and rating dimensions in columns. A basic matrix might include frequency, duration, importance, difficulty, error consequence, and automation potential.

TaskFrequency (1–5)Importance (1–5)Difficulty (1–5)Error consequence (1–5)Evidence for redesign
Validate customer identity5535Standardize verification prompts
Resolve exception cases2555Add escalation support
Enter routine address changes4212Consider workflow automation
Coach new employees2443Allocate protected time

The matrix supports prioritization, but it is not a decision rule by itself. A task with low frequency and high consequence may deserve more attention than a frequent low-risk task. Analysts should therefore examine profiles and thresholds, not only total scores.

A useful prioritization approach is to classify tasks by combinations of dimensions:

  • High frequency–high importance: candidates for process improvement and capacity protection.
  • Low frequency–high consequence: candidates for training, simulations, checklists, and escalation controls.
  • High frequency–low importance: candidates for simplification, delegation, or automation.
  • High difficulty–high variability: candidates for expert support, knowledge systems, or clearer decision rights.

Ratings should be supplemented by objective evidence where possible. Employees may overestimate or underestimate task frequency, while system logs may fail to capture cognitive work.

5. Reliability and Agreement

Reliability concerns consistency, not truth. A perfectly reliable measure can still be invalid if it systematically measures the wrong construct.

Internal consistency

When several survey items are intended to measure one construct, Cronbach’s alpha is commonly reported:

α = [k/(k − 1)] [1 − (∑ᵢ₌₁ᵏ σᵢ²)/σT²]

Here, k is the number of items, σi² is the variance of item i, and σT² is the variance of the total score. Alpha assumes, among other conditions, that items are sufficiently related and approximately measure a common construct. A high alpha can result from many redundant items and does not prove unidimensionality. For ordinal items or congeneric measures, alternatives such as omega may be preferable.

Inter-rater reliability

For categorical judgments, Cohen’s kappa adjusts observed agreement for agreement expected by chance:

κ = (Po − Pe)/(1 − Pe)

Po is observed agreement and Pe is expected agreement under the selected chance model. Kappa can be depressed when one category is very common, so prevalence and marginal distributions must be examined. For continuous ratings, an intraclass correlation coefficient (ICC) is often more appropriate than a simple correlation because ICC evaluates agreement or consistency among ratings. The ICC model must specify whether raters are fixed or sampled and whether absolute agreement or consistency is intended.

Reliability estimates should be accompanied by confidence intervals, sample size, scale definitions, and the design used. Arbitrary cutoffs such as “above .70 is always acceptable” are inferior to contextual judgment. High-stakes classification generally requires stronger evidence than exploratory research.

6. Factor Analysis and Cluster Analysis

Exploratory factor analysis

Exploratory factor analysis (EFA) investigates whether observed variables can be represented by fewer latent dimensions. A simplified measurement model is:

x = Λf + ε

Here, x is a vector of observed ratings, Λ is the factor-loading matrix, f is a vector of latent factors, and ε represents unique error. The model assumes an appropriate correlation structure and requires decisions about extraction, rotation, number of factors, and treatment of missing data.

EFA can reveal patterns such as a distinction between cognitive demands, social demands, and administrative demands. It should not be used merely to produce attractive labels. Analysts should inspect sample adequacy, communalities, cross-loadings, factor stability, and theoretical interpretability. Parallel analysis and scree plots are generally more defensible than retaining factors solely because their eigenvalues exceed one.

Confirmatory factor analysis (CFA) tests a pre-specified structure in new or appropriately separated data. Fit indices support evaluation but do not substitute for theory, validity, or replication.

Cluster analysis

Cluster analysis groups cases according to similarity. Cases may be jobs, tasks, employees, locations, or work processes. In k-means clustering, a common objective is to minimize within-cluster squared distance:

∑ⱼ₌₁ᵏ ∑ₓ∈Cⱼ ||x − μⱼ||²

Here, Cj is cluster j, μj is its centroid, and k is the selected number of clusters. Variables should generally be standardized when they use different scales; otherwise, a variable with larger numerical units can dominate distance calculations.

Clusters are descriptive segments, not naturally existing types. Results can change with scaling, distance metric, algorithm, outliers, and the selected number of clusters. Managers should ask whether clusters are stable, interpretable, actionable, and ethically acceptable. A cluster labeled “low performer” may simply represent a group with less access to work, poorer data quality, or a different job mix.

7. Skills-Gap Analysis

Skills-gap analysis compares required capability with current capability. The comparison may concern individuals, teams, occupations, or strategic capabilities.

A basic gap for skill s is:

Gs = Rs − Cs

Rs is the required proficiency and Cs is current proficiency, measured on the same validated scale. A positive value indicates a shortfall; a negative value indicates capability above the stated requirement. The calculation is meaningful only if the proficiency anchors are explicit and the requirement is linked to actual future work.

A gap matrix can distinguish urgency from size:

SkillRequiredCurrentGapBusiness criticalityPriority response
Data interpretation42.51.5HighStructured development and coaching
Case documentation33.2−0.2MediumMaintain and monitor
Process automation41.52.5HighHire, build, or partner

Capability decisions should consider four responses: develop, redeploy, recruit, and redesign. Training is not always the correct response. A gap may be caused by inaccessible tools, unclear procedures, insufficient time, or an unrealistic requirement. Self-ratings are useful for perceptions but should be triangulated with work samples, assessments, supervisor evidence, and performance records.

8. Workload Indicators and Capacity Reasoning

Workload has quantitative, qualitative, temporal, physical, emotional, and cognitive dimensions. No single indicator captures all of them.

A basic utilization indicator is:

Utilization = Productive work time / Available paid work time

The numerator and denominator must use consistent time units and definitions. If an employee has 30 hours of productive case work and 37.5 paid hours, utilization is 80%. This is not automatically an optimal target: meetings, recovery, learning, coordination, and unplanned work are legitimate parts of many jobs.

For a workflow, approximate demand capacity can be represented as:

Required labor hours = ∑ᵢ (Volumeᵢ × Standard timeᵢ)

The result is in labor-hours when volume is measured in cases and standard time in hours per case. If 600 cases require 0.25 hours each, required labor is 150 hours. Standards must account for complexity, breaks, variability, service levels, and non-case work; otherwise, they create false precision and harmful pressure.

Other indicators include overtime rate, queue length, backlog age, interruption frequency, schedule volatility, span of control, error rate, rework, absence, and employee-reported exhaustion. Indicators should be disaggregated by shift, site, job family, tenure, and relevant work conditions, subject to privacy protections. A dashboard showing only speed can encourage work avoidance, unsafe shortcuts, and poor quality.

9. Dashboards for Managerial Decisions

A useful dashboard connects a decision to a small set of valid indicators. It should distinguish leading indicators, such as training completion or backlog growth, from lagging indicators, such as customer complaints or turnover.

A dashboard design sequence is:

  1. State the decision: for example, whether to add staffing, redesign a workflow, or invest in training.
  2. Define the construct and operational measure.
  3. Identify the numerator, denominator, time window, and data owner.
  4. Establish baselines, targets, tolerances, and comparison groups.
  5. Display distributions and uncertainty, not only averages.
  6. Provide drill-downs that reveal context without exposing unnecessary personal data.
  7. Document definitions, refresh schedules, data quality, and limitations.
  8. Specify what action follows each signal.

A balanced work-design dashboard might include:

PerspectiveExample measuresDecision use
Demand and capacityVolume, required labor hours, backlog ageStaffing and scheduling
Quality and riskError rate, rework, safety eventsControls and process redesign
Work experienceAutonomy, demands, support, fatigueJob and resource redesign
CapabilitySkill gaps, proficiency distributionDevelopment and hiring
AdaptabilityCross-training, task coverage, technology useResilience and succession

Metrics become dangerous when used as direct proxies for employee worth. Governance should require access controls, purpose limitation, retention rules, employee notice, correction mechanisms, human review, and periodic bias audits. Automated recommendations should be explainable enough for managers and employees to understand the evidence and challenge errors.

10. Evaluating Redesign Outcomes Without Overstating Causality

A redesign evaluation should begin with a theory of change: what was changed, through what mechanism, and which outcomes should respond, over what time period? Outcomes should include intended benefits and possible harms.

A pre–post comparison is informative but weak for causal inference. A simple change is:

∆Y = Yafter − Ybefore

If a comparison group is available, a difference-in-differences estimator is:

DID = (YT,after − YT,before) − (YC,after − YC,before)

T denotes the treatment or redesigned group and C the comparison group. The design is more credible when the groups would plausibly have followed parallel trends in the absence of redesign, treatment timing is clear, spillovers are limited, and composition changes are addressed. The estimate remains vulnerable to differential shocks, anticipation, attrition, and concurrent interventions.

Randomized rollout can strengthen causal inference where ethically and operationally feasible. Interrupted time-series designs, matched comparisons, stepped-wedge implementation, and qualitative process evaluation may also help. Statistical significance should not be confused with practical significance. Report effect sizes, confidence intervals, baseline levels, implementation fidelity, and subgroup effects.

A redesign may improve speed while reducing quality or increasing fatigue. Therefore, evaluate a portfolio of outcomes: productivity, quality, safety, customer results, learning, autonomy, fairness, health, and retention. If outcomes conflict, the decision requires explicit value judgments rather than a hidden single metric.

11. Illustrative Case: Redesigning a Claims-Processing Operation

Background

The following is a fictional illustrative case. A regional insurer processes vehicle claims through 12 teams. Senior managers observe rising backlogs and overtime. They propose automating document classification and reallocating complex claims to specialist teams.

Problem

Initial reports show that average claims completed per employee fell by 8% over six months. Managers assume declining employee effort. However, employees report more exceptions, repeated data entry, and frequent interruptions from urgent cases.

Analysis

The analytics team combines four sources: system logs, a task-rating survey, interviews, and quality records. Descriptive analysis shows that median routine-case time is stable, but the mean has increased because complex cases have become more common. A task matrix identifies routine document sorting as high frequency and low difficulty, while exception resolution is low frequency, high difficulty, and high consequence. Employee ratings show high demands but also low decision authority for exception cases.

The team examines reliability. The five-item workload scale has acceptable internal consistency for exploratory use, but one item is poorly aligned with the construct and is revised. Raters show moderate agreement on task criticality, with disagreement concentrated among new employees. This prompts clearer anchors and calibration sessions.

A cluster analysis of claims identifies three operationally meaningful groups: routine claims, moderate-complexity claims, and exception-heavy claims. The clusters are validated against independent case outcomes rather than treated as definitive categories. A skills-gap analysis shows a substantial gap in data interpretation and exception judgment among newer employees, but interviews reveal that the larger constraint is limited access to specialist guidance.

Approach

The redesign includes automated document sorting, protected specialist escalation time, a decision-support knowledge base, cross-training, and revised workload allocation. A phased rollout is used: six teams receive the redesign first and six serve as a comparison group. Managers agree in advance that success requires lower backlog age without increasing error rates, overtime, or reported exhaustion.

Outcome

After three months, the redesigned teams show a larger reduction in backlog age than comparison teams. Routine-case processing time declines, while quality remains stable. Employee reports indicate improved access to expertise but continued pressure during seasonal peaks. Because the rollout was not randomized and seasonal demand differed somewhat between groups, the evaluation concludes that the redesign is associated with improvement and is consistent with the proposed mechanism; it does not claim that automation alone caused the entire change.

Learning points

  1. Mean processing time can misrepresent a changing case mix.
  2. A task matrix should distinguish frequency from consequence and difficulty.
  3. A skills gap may reflect work-system constraints rather than employee deficiency.
  4. A balanced outcome set prevents speed from becoming the sole objective.
  5. Phased comparison improves evidence but does not eliminate causal uncertainty.

12. Challenges, Ethics, and Contemporary Developments

Analytics can reproduce historical inequities when past performance data reflect unequal opportunity. Variables such as absence, availability, or productivity may be affected by caregiving, disability, scheduling, discrimination, or unequal work allocation. Fairness review should examine whether measures are job-related, whether groups experience different error rates or burdens, and whether decisions can be contested.

Privacy requires proportionality. Collect only information needed for a defined purpose, protect sensitive data, restrict access, establish retention periods, and avoid continuous surveillance when less intrusive methods are adequate. In many jurisdictions, employment data are subject to privacy, labor, discrimination, health and safety, and automated-decision regulation. Legal compliance is a minimum, not a substitute for ethical judgment.

Artificial intelligence can assist with coding text from interviews, detecting workflow patterns, forecasting demand, and recommending training. It can also hallucinate job requirements, infer sensitive characteristics, encode bias, and create opaque rankings. Human review must include substantive expertise, not merely approval of an automated output. Models require validation on the relevant population, monitoring for drift, documentation of features and limitations, and a process for correction and appeal.

Best practice is to treat analytics as a participatory change process. Employees and their representatives can identify invisible work, test definitions, interpret anomalies, and evaluate whether proposed redesigns are workable. Transparency improves data quality and legitimacy, while excessive metricization can erode trust and intrinsic motivation.

Chapter Summary

Job and work-design analytics uses structured evidence to understand tasks, capabilities, demands, resources, and outcomes. Descriptive statistics reveal distributions and workload patterns, while task-rating matrices organize judgments across frequency, importance, difficulty, and consequence. Reliability analysis distinguishes consistency from validity and requires attention to scale design and rater agreement.

Factor analysis can identify latent dimensions of work, and cluster analysis can describe heterogeneous task or job profiles, but both depend on methodological choices and should not be treated as discovering objectively fixed categories. Skills-gap analysis compares validated requirements with current capability and should consider development, recruitment, redeployment, and work redesign. Workload indicators must use transparent denominators and should be balanced with quality, safety, learning, and employee experience.

Dashboards are most useful when each measure is linked to a decision, defined precisely, and interpreted with context. Redesign evaluation should combine theory of change, comparison designs, effect sizes, uncertainty, implementation evidence, and safeguards against overclaiming causality. Ethical analytics requires validity, fairness, privacy, transparency, human oversight, and meaningful employee participation.

Key Terms

Job analysis: Systematic study of tasks, duties, responsibilities, and job requirements.

Work design: Arrangement of tasks, roles, relationships, resources, technology, and authority.

Task-rating matrix: Structured table that records ratings of tasks across defined dimensions.

KSAOs: Knowledge, skills, abilities, and other characteristics relevant to work performance.

Descriptive statistics: Numerical methods for summarizing observed data.

Mean: Arithmetic average of a set of observations.

Median: Middle value in an ordered distribution.

Standard deviation: Measure of dispersion around the mean.

Reliability: Consistency of a measurement process.

Validity: Degree to which evidence supports an intended interpretation or use of a measure.

Cronbach’s alpha: Internal-consistency estimate for a multi-item scale.

Inter-rater reliability: Consistency or agreement among raters.

Factor analysis: Method for examining latent dimensions underlying observed variables.

Cluster analysis: Method for grouping cases according to similarity.

Skills gap: Difference between required and current proficiency.

Utilization: Ratio of productive work time to available paid work time, under defined measurement rules.

Difference-in-differences: Comparison of changes over time between a redesigned group and a comparison group.

Leading indicator: Measure that may signal future performance or risk.

Metric gaming: Behavior that improves a measured indicator while undermining the underlying objective.

Measurement invariance: Evidence that a measure functions comparably across groups or conditions.

Review Questions

Short Answer Questions

  1. Why should a job-analysis dataset specify its unit of analysis before data collection?
  2. When might the median be more informative than the mean in workload analysis?
  3. Distinguish reliability from validity.
  4. What is the purpose of standardizing variables before many cluster analyses?
  5. Why should a dashboard include both quality and productivity measures?

Long Answer Questions

  1. Explain how the Job Characteristics Model and the Job Demands–Resources model can jointly inform work redesign.
  2. Describe the construction and appropriate interpretation of a task-rating matrix.
  3. Compare exploratory factor analysis and cluster analysis in terms of purpose, assumptions, and managerial use.
  4. Explain how ethical and privacy concerns should shape workforce analytics governance.
  5. Discuss why a pre–post comparison generally provides weaker causal evidence than a comparison-based design.

Analytical / Application Questions

  1. A team completes 400 routine cases requiring 0.20 labor-hours each and 100 complex cases requiring 0.75 labor-hours each. Calculate required labor-hours and explain two limitations of using this estimate for staffing.
  2. A redesigned team’s error rate falls from 6% to 4%, while a comparison team’s rate falls from 5% to 4.5%. Calculate the difference-in-differences change in percentage points and explain why it should not automatically be interpreted as a causal effect.
  3. Design a dashboard for evaluating a new employee self-service system. Select at least one demand, quality, capability, experience, and fairness indicator, and specify one governance safeguard for each category.

Multiple Choice Questions with Answers

Question 1

Which statement best distinguishes job analysis from work design?

A. Job analysis arranges technology, while work design measures reliability.

B. Job analysis studies work requirements, while work design concerns how work is arranged.

C. Job analysis is limited to pay, while work design is limited to recruitment.

D. Job analysis establishes causality, while work design summarizes data.

Correct Answer: B. Job analysis studies work requirements, while work design concerns how work is arranged.

Question 2

Which statistic is generally least affected by one unusually long case duration?

A. Mean

B. Range

C. Median

D. Variance

Correct Answer: C. Median

Question 3

A task is performed rarely but has severe consequences when done incorrectly. Which classification is most appropriate?

A. Low priority because frequency is low

B. High priority for controls and training

C. Suitable for removal from analysis

D. Automatically suitable for automation

Correct Answer: B. High priority for controls and training

Question 4

What does a high reliability estimate primarily indicate?

A. The measure is consistent

B. The measure is causally valid

C. The measure is free of bias

D. The measure has practical significance

Correct Answer: A. The measure is consistent

Question 5

What is a central purpose of exploratory factor analysis?

A. To prove that one intervention caused an outcome

B. To group employees by performance ranking

C. To investigate latent dimensions underlying observed variables

D. To calculate required labor-hours

Correct Answer: C. To investigate latent dimensions underlying observed variables

Question 6

Why are variables often standardized before k-means clustering?

A. To eliminate all missing data

B. To prevent variables with larger units from dominating distances

C. To guarantee the correct number of clusters

D. To establish causal direction

Correct Answer: B. To prevent variables with larger units from dominating distances

Question 7

If required proficiency is 4 and current proficiency is 2.5 on the same scale, what is the skills gap?

A. −1.5

B. 0.6

C. 1.5

D. 6.5

Correct Answer: C. 1.5

Question 8

Which formula represents utilization as defined in the chapter?

A. Available paid time ÷ productive work time

B. Productive work time ÷ available paid work time

C. Productive work time × available paid work time

D. Productive work time − available paid work time

Correct Answer: B. Productive work time ÷ available paid work time

Question 9

What is a key assumption supporting a difference-in-differences interpretation?

A. The groups have identical sample sizes

B. The groups would plausibly have followed parallel trends without the intervention

C. The outcome is always normally distributed

D. The intervention is randomized in every case

Correct Answer: B. The groups would plausibly have followed parallel trends without the intervention

Question 10

Which practice best reduces the risk of dashboard-driven metric gaming?

A. Use one speed metric as the sole target

B. Hide metric definitions from employees

C. Balance productivity measures with quality, safety, and experience indicators

D. Remove all human review from decisions

Correct Answer: C. Balance productivity measures with quality, safety, and experience indicators

Job Analysis & Design
Chapter 11 of 14