(Answered) With scores on a statistics take home exam of 10 randomly

Statistics

With scores on a statistics take home exam of 10 randomly selected students and the number of days each student spent working on the exam.

Days, x----- 2, 4, 1, 7,1, 3, 3, 4, 5, 2

Score, y---- 64, 79, 59, 87, 65, 77, 84, 89, 89, 70

1.) Easiest way to find r =

2.) Does a correlation exist? Why or why not?

3.) Is there a way to reference the critical value?

4.) would a Scatter plot help me support this answer of #3 question?

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