Question
In order for applicants to work for the foreign-service department, they must take a test in...
In order for applicants to work for the foreign-service department, they must take a test in the language of the country where they plan to work. The data below shows the relationship between the number of years that applicants have studied a particular language and the grades they received on the proficiency exam. Calculate the correlation coefficient, r.
| number of years x | 7 8 8 9 7 10 6 11 7 |
|---|---|
| grades on test y | 64 71 78 85 76 93 61 96 75 |
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