Education · Research Methodology and Statistics
What is the formula to calculate the total reliability coefficient of a test using the Spearman-Brown Prophecy formula in the split-half method, where r1/2 represents the reliability of the half-test?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(2 * r1/2) / (2 + r1/2)
- 2(r1/2) / (2 + r1/2)
- 3(2 * r1/2) / (1 + r1/2)✓
- 4(r1/2) / (1 + r1/2)
Correct answer
(2 * r1/2) / (1 + r1/2)
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