Posted by Lucy on .
4) The table below shows the study times and test scores for a number of students.
Study Time (minutes) (x) 9 16 21 26 33
Test Score (y) 59 61 64 65 73
a)What line best relates study time to the test score?
b)Calculate r and r^2.
c)Determine whether r is statistically significant using a 5% significance level.