A reliability coefficient (r) and a standard error of measurement (SEM) were computed on a test with 10 items. What would happen to those statistics if the test were increased to forty items?
A. r would decrease, SEM would increase.
B. r would decrease, SEM would stay the same.
C. r would increase, SEM would decrease.
D. r would increase, SEM would stay the same.
Question 2
Whenever the reliability coefficient is low, the standard error of measurement will be:
A. zero.
B. low.
C. high.
D. unchanged.
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