Lean Six Sigma White Belt (LSSWB) — Question 2

What is standard deviation?

Answer options

• A. It is a measuring process to measuring the average spread of data.
• B. This is the process of deviation.
• C. It is a process capability index.
• D. It is the process of calculating the difference between customer requirement and production.

Correct answer: A

Explanation

The correct answer, A, accurately describes standard deviation as a measure of how much data varies from the average. Options B, C, and D do not provide accurate definitions of standard deviation, as they either describe unrelated concepts or confuse it with other statistical measures.