Which term describes consistency in measurements and tests, the extent to which two applications of the same measurement rank persons in the same way?

Which term describes consistency in measurements and tests, the extent to which two applications of the same measurement rank persons in the same way?

• A. Reliability
• B. Validity
• C. Bias
• D. Standardization

Answer: (A)

Reliability is about the consistency of a measurement across time, forms, or raters. When the same measurement is applied twice and it ranks students in the same order, that shows the scores are stable and dependable. In other words, high reliability means the relative standing of students remains similar across administrations, so you can trust the measurement to be consistent. Validity, by contrast, asks whether the test actually measures what it intends to measure, not whether it yields stable rankings. Bias refers to systematic errors that skew results in one direction, and standardization is about using uniform procedures for administration and scoring—helping consistency but not defining the consistency of rankings itself.

Reliability is about the consistency of a measurement across time, forms, or raters. When the same measurement is applied twice and it ranks students in the same order, that shows the scores are stable and dependable. In other words, high reliability means the relative standing of students remains similar across administrations, so you can trust the measurement to be consistent.

Validity, by contrast, asks whether the test actually measures what it intends to measure, not whether it yields stable rankings. Bias refers to systematic errors that skew results in one direction, and standardization is about using uniform procedures for administration and scoring—helping consistency but not defining the consistency of rankings itself.