IASSC Certified Lean Six Sigma Green Belt (ICGB) — Question 28

A Belt will occasionally do a quick experiment referred to as an OFAT which stands for ____________________.

Answer options

• A. Only a Few Are Tested
• B. Opposite Factors Affect Technique
• C. One Factor At a Time
• D. Ordinary Fractional Approach Technique

Correct answer: C

Explanation

The correct answer is C, One Factor At a Time, which accurately describes the OFAT approach where only one variable is changed to observe its effect. The other options do not align with the OFAT methodology and thus are incorrect.