Your grade in math class is the measure of central tendency (average) of your grades during the class. Suppose these were your grades 85, 88, 91, 77, 74, 89, 80, 77, 88
1. Find your mean grade. 85+ 88+ 91+ 77+ 74+ 89+ 80+ 77+ 88 = 749 Now take 749 and divide by 9 because there are 9 grades. 749 / 9 = 83.222222 which rounds to 83.22
2. Find your median grade. Put the numbers in order first. 74, 77, 77, 80, 85, 88, 88, 89, 91 The number in the middle is 85
3. Find the mode. We see that 77 and 88 both occur twice in the list of grades. Both 77 and 88 are the modes because they appear the most times.
