Refer to Exercise 2.20. Another pair of students achieved the following marks.

Student P: 94, 91, 88, 77, 75, 74, 66, 65, 54, 52

Student Q: 93, 91, 88, 75, 75, 73, 67, 66, 55, 51

a. Calculate the average mark and the grade point average for each student.

b. Compare the mark average and the grade point average of this pair of students with the ones in Exercise 2.20.

Exercise 2.20

At WLU (a famous Canadian university), suppose that instructors mark exams out of 100 and then must convert that mark to a letter grade using the following conversions.

A: 80–100

B: 70–79.9

C: 60–69.9

D: 50–59.9

F: Less than 50

Student X’s marks on each course are 81, 83, 81, 71, 72, 74, 63, 61, 51, 35.

Student Y’s marks are 98, 96, 99, 79, 78, 79, 68, 69, 57, 49.