Author Question: Professor Plum created class intervals from the test scores for his class. He made a line graph ... (Read 486 times)

ss2343 · **on:** Jun 19, 2018

Professor Plum created class intervals from the test scores for his class. He made a line graph using these intervals on the X-axis and the proportion of students who answered a particular question correctly on the Y-axis. The result is

a. a discrimination index.
b. a correlation index.
c. an item characteristic curve.
d. a histogram.

Question 2

The first attempt to apply factor analytic techniques to test construction were made by

a. Sam Beck.
b. R.B. Cattell.
c. Henry Murray.
d. J.R. Guilford.