IASSC Certified Lean Six Sigma Green Belt (ICGB) — Question 26

Multiple Linear Regressions (MLR) is best used when which of these are applicable? (Note: There are 3 correct answers).

Answer options

• A. Non-linear relationships between the inputs X’s and output Y
• B. Uncertainty in the slope of the linear relationship between an X and a Y
• C. Relationships between Y (output) and more than one X (Input)
• D. Preventing the use of a Designed Experiment if unnecessary
• E. We assume that the X’s are independent of each other

Correct answer: C, D, E

Explanation

The correct answers C, D, and E reflect the fundamental principles of Multiple Linear Regression, where it is essential to analyze the relationship between one output variable and multiple input variables. Options A and B are incorrect because MLR specifically deals with linear relationships and does not address uncertainties in slopes.