Mathematics · Test Reliability and Spearman-Brown Formula
A 100-item objective test has a reliability coefficient of 0.60. If the number of items in the test is reduced to half (50 items), what will be the new reliability coefficient according to the Spearman-Brown formula?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.43✓
- 20.26
- 30.28
- 40.30
Correct answer
0.43
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