A test of spatial skills has a mean of 80 and a standard deviation of 5. A newer, different test that also measures spatial skills has a mean of 100 and a standard deviation of 2. The distribution of the older test is ________________ than the distribution of the newer test.
A) narrower
B) the same
C) wider
D) more skewed

Question

Quizplus · Accepted Answer

The standard deviation of the newer test is smaller (2) than the standard deviation of the older test (5), which means that the spread of scores for the newer test is narrower. Therefore, the distribution of the older test is wider (or more spread out) than the distribution of the newer test.

A Test of Spatial Skills Has a Mean of 80