IASSC Certified Lean Six Sigma Green Belt (ICGB) — Question 32

The actual experimental response data varied somewhat from what a Belt had predicted them to be. This is the result of which of these?

Answer options

• A. Inefficiency of estimates
• B. Residuals
• C. Confounded data
• D. Gap Analysis

Correct answer: B

Explanation

The correct answer is B, as residuals represent the difference between observed values and predicted values, which explains the variations in experimental data. Options A and C do not directly account for discrepancies in predictions, while D, Gap Analysis, refers to identifying differences between current and desired performance rather than explaining prediction errors.