Multiple Choice
According to classical test theory, s2obs = s2tru + s2err, and r11 = s2tru/s2obs. If the observed variance of a test is 50 and the error variance is 10, what is the estimated reliability of the test?
A) .20
B) .25
C) .45
D) .80
Correct Answer:

Verified
Correct Answer:
Verified
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