Pearson Productmoment coefficient (r)  hand calculation
5. Use the following formula to calulate r.


6. Find the probability value (p) associated with the obtained r = .667  


For this example, r = .667, df =
10. The obtained value of .667 exceeds the cutoff of .576 (df =
10) shown on the table at the .05 level. Therefore, p <.05.
In a report the result is shown as r(10) = .667, p <.05. If no sign is shown, r is assumed to be + (positive). If r is negative, the minus sign must be shown, e.g., r(20) = .812, p <.01 