# Validity

The reliability coefficient for a test is determined to be 0.84. The standard deviation is 11. The mean for the test is 54. What is the maximum validity for the test?

What is the standard error of measurement for the test?

What range of scores would you expect an individual who made 54 on the test to make on another test of similar difficulty? Assume you want to be 68% accurate in your estimate.

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#### Solution Preview

What is the maximum validity for the test?

For maximum validity

Reliability coefficient = (Validity coefficient)^2

reliability coefficient= 0.84

Therefore Validity coefficient= 0.92 =*square root of (0.84)

Answer: Maximum validity= 0.92

What is the standard error of ...

#### Solution Summary

The solution calculates the maximum validity and the standard error of measurement for the test.