Mathematics · Statistics
In research methodology, the test-retest reliability (often referred to as external reliability over time) is defined as:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The increase and decrease in scores measured over time produce a variance of less than 50%
- 2The consistency of a measure taken at two different points of time✓
- 3The identical observation of a single individual's scores
- 4The property of a distribution to achieve a mean of 0 and variance of 1
Correct answer
The consistency of a measure taken at two different points of time
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