Name: Directions: Please redo the following problems from the midterm exam and bring your work and answers to the next class for partial credit. For question #52, use the following sample scores: 5, 2, 8, 3, 2, 4, 12. 52. The standard deviation of the distribution above is (show your work on this page or on the back). (Worth 2 points) During the last five years there has been an inflationary trend in the average cost of a gallon of milk, as the following chart shows. Calculate the slope and the Y-intercept of the regression line by filling in the correct numbers into the correct formula in the space provided. X Year 1 Year 2 Year 3 Year 4 Year 5 Y $1.10 $1.23 $1.30 $1.50 $1.65 62. slope = (Worth 2 points) 63. Y-intercept= (Worth 2 points) 64. Using the above data, calculate Pearson's r correlation coefficient (show your work): (Worth 2 points)