Open the dataset. Is there a relationship between age in months and grade point average? How strong is the relationship?
Age in months and grade point average are both continuous variables, so we can use Pearson’s r correlation coefficient to look at this question.
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In the output we can see that Pearson’s r is -.274. So there is a modest relationship between the two variables. The significance level is .000, which means the relationship is
highly significant (and therefore it is likely that there is a relationship between the two variables in the population as well as the sample). The sign is negative, which means that
as age increases, grade point average decreases. So on average older pupils have a lower grade point average.
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