IASSC Certified Lean Six Sigma Black Belt (ICBB) — Question 52

Which of the following statements defines ‘interval measurement scale’?

Answer options

• A. In interval measurement scale, higher numbers refer to higher rank order and higher values and lower numbers refer to lower rank order and lower values.
• B. In interval measurement scale, items are categorized depending on the degree of a characteristic they possess.
• C. Interval measurement scale has equidistant points and a meaningful zero point.
• D. In interval measurement scale, the distance between adjacent points on the scale is equal and there is no natural zero.

Correct answer: B

Explanation

The correct answer is B, as it accurately describes how items are classified based on the degree of a characteristic. Options A, C, and D mix up the definitions related to rank order, zero points, and distance, which do not correctly define the interval measurement scale.