Quiz 4 – Measurement and Process Capability

A company asks three inspectors to classify the same products as Accept or Reject, with repeated assessments and a known reference classification. Which analysis is designed to evaluate within-appraiser, between-appraiser, and appraiser-to-standard agreement? *

Attribute Agreement Analysis

Gage R&R

Process Capability Analysis

Two inspectors classify categorical items, and the team specifically wants a statistic that measures agreement beyond the agreement expected by chance. Which statistic is most appropriate? *

Kappa

Cpk

Ppk

Which statement correctly distinguishes Kappa Analysis from Attribute Agreement Analysis? *

Kappa is a specific categorical agreement statistic, while AAA is a broader analysis of attribute measurement agreement

Kappa evaluates continuous measurement variation, while AAA evaluates process capability

AAA is used only for machine calibration, while Kappa measures repeatability

Kappa and AAA are different names for the same complete analysis

A micrometer is used to measure component diameter. Three operators measure ten parts twice each. Which measurement-system analysis is primarily appropriate? *

Gage R&R

Kappa Analysis

Attribute Agreement Analysis

DPMO Analysis

In a Gage R&R study, the same operator obtains noticeably different readings when repeatedly measuring the same part under the same conditions. Which component is primarily indicated? *

Repeatability

Reproducibility

Part-to-part variation

Process centering

In a Gage R&R study, different operators consistently obtain different measurements from the same parts. Which component is primarily indicated? *

Repeatability

Reproducibility

Specification width

Process capability

A process has USL = 50.20, LSL = 49.80, and within-process σ = 0.05. What is Cp? *

0.67

1.00

1.33

2.00

A process has USL = 50.20, LSL = 49.80, mean = 50.10, and within-process σ = 0.05. What is Cpk? *

0.67

1.00

1.33

2.00

Which statement correctly distinguishes specification limits from control limits? *

Specification limits represent requirements, while control limits describe statistically expected process behavior

Specification limits are calculated from process data, while control limits are customer requirements

Both are calculated from the same formula and have the same purpose

Control limits define customer tolerance, while specification limits identify special causes

A process has Cp = 1.50 and Cpk = 0.80. What does the difference most directly suggest? *

The process may have adequate potential spread but is not well centered relative to the specifications

The measurement system must have zero variation

The process has no variation between parts

The specification limits are identical to the control limits

A process produces 2,000 units. Each unit has 5 defect opportunities, and 10 defects are found. What is the DPMO? *

500

1,000

2,000

5,000

Which sequence is most appropriate before reporting capability for a process? *

Verify measurement system → confirm stability → examine distribution → define specifications → analyze capability

Calculate Cpk → establish specifications → perform MSA → check stability

Calculate DPMO → remove outliers → assume normality → report Cp

Set control limits equal to specification limits → calculate Ppk → perform MSA