Testosterone level (high numbers = high testosterone level) and athletic ability (high numbers = a lot of athletic ability) were observed in a group of 13 colleges males.The following observations were made:

SubjectTestosterone LevelAthletic Ability

Alfie00

Boris12

Corky23

Dirk35

Elvis47

Fergus59

Gavin610

Herbert78

Isidore86

Jethro95

Kermit103

Lyle111

Morris120

To find the statistic that captures the relationship between these two variables you should

Possible Answers:

compute an effect size index d

convert the scores to z-scores first

compute the Pearson correlation coefficient r, which you could do using the formular =(zXzY) / N