The validity of most achievement tests is determined by
A) comparing test scores with teacher-assigned marks in the same material.
B) computing the correlation between test scores and later school achievement.
C) comparing test content with instructional objectives.
D) computing the difficulty and discrimination indexes for the items on the test.
Question 2
Which of the following is not taken into account by a Taylor-Russell table?
A) reliability B) base rate C) validity D) selection ratio
