Which of the following statistics is generally used to estimate reliability and validity?
A) the correlation coefficient
B) the standard deviation
C) the percentile score
D) the median

Question

Quizplus · Accepted Answer

The correlation coefficient is generally used to estimate reliability and validity as it measures the strength and direction of the relationship between two variables. A high correlation coefficient indicates a strong relationship and therefore higher reliability and validity. The standard deviation, percentile score, and median are not commonly used for estimation of reliability and validity.

Which of the Following Statistics Is Generally Used to Estimate