Question

Test Yourself Suppose that the following table is your record of exam grades in your Principles of Economics course: Exam Date Grade Comment September 30 65 A slow start October 28 75 November 26 90 A big improvement Happy Thanksgiving! Slipped a little A fast finish! December 13 85 January 24 95 Use these data to make up a table of total, average, and marginal grades for the five exams.

Answer 1

Answer:

examination date	Grades	cumulative grade	marginal grade
Sep-30	65	65
Oct-28	75	140	10
Nov-26	90	165	15
Dec-13	85	175	-5
Jan-24	95	180	10
	Average =      82

Average grade is the sum of all 5 grades divided by the number of examinations. = 180/ 5 =82

Marginal grade = grade in an examination - grade in the previous examination. This is given in the last column.

Total grade = sum of all 5 grades (=180). It is the last cell of cumulative grades.