Hypothetically, 9% of the variation of skill among dentists is accounted for by the test that they took in order to pass the dental board examination. What is the validity coefficient of the test?
A)0.03
B)0.3
C)0.9
D)3.0

Question

Quizplus · Accepted Answer

The validity coefficient of the test is the square root of the variance accounted for by the test. Since 9% (or 0.09) of the variation is accounted for, the square root of 0.09 is 0.3, making the validity coefficient 0.3.

Hypothetically, 9% of the Variation of Skill Among Dentists Is