Two tests were given to students in the eighth grade. Test A contained 75 items and was given to eighth-grade students who were of mixed abilities. Test B contained 20 items and was given to eighth-grade honors students. Which test is likely to have a higher reliability coefficient and why?
a) Test A, because the test was longer and was administered to a heterogeneous group of participants.
b) Test A, because it was given before Test B and might have influenced the scores on Test B.
c) Test B, because the test was short and reliability would not have been affected by student fatigue.
d) Test B, because the test was taken by a group of students who would perform well on the test.
a
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