What is the name of the statistical method that helps identify which factors may influence specific variables of a product or process under development or in production?

Question

Options

• AFailure modes and effects analysis
• BDesign of experiments
• CQuality checklist
• DRisk analysis

• A
  2% (1)
• B
  78% (32)
• C
  7% (3)
• D
  12% (5)

Explanation

Design of Experiments (DoE) is the statistical method specifically designed to systematically identify which input factors influence output variables in a product or process - it does this by deliberately varying factors and measuring their effects, making it the only choice here that is both statistical and focused on factor-variable relationships.

Why the distractors are wrong:

• A. Failure Modes and Effects Analysis (FMEA) identifies what can go wrong and the consequences, not which factors statistically influence variables.
• C. Quality Checklist is a simple verification tool - it confirms steps were completed, not causal relationships.
• D. Risk Analysis evaluates probability and impact of risks broadly; it doesn't isolate which factors drive specific process variables.

Memory tip: Think of DoE as "running controlled experiments like a scientist" - you design tests to see what factors move the needle on your outcome. The word "experiments" is the giveaway: only DoE is an experimental (statistical) method among the four choices.

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