## Correlation and Hypothesis Testing

## Conducting a hypothesis test of correlation is similar to the methods of hypothesis testing with which we have grown familiar, with a few noticable differences:

- The relevant distribution is the t-distribution, with r=0 at the center (mean).

- The rejection region is determined through degrees of freedom and significance level. The difference is the change in the method for determining the Degrees of Freedom:

## Degrees of Freedom =

n- 2## The distribution is entered by converting the

rvalue with the following equation:

Case Example: The SAT and Family Income

6:5