The correlation coefficient for the linear regression of the enrollment data is .

There is a
positive linear correlation between the x–value (years since 2000) and y–value (student enrollment).

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.