Finding the mean.

Find the mean of the following scores: 2, 5, 8, 3, 7, 1, 5, 3, 9, 7, 3.

• 4.82

• 4.83

• 4.84

• 4.85

The scores of 10 high students in Mathematics are 7, 5, 5, 6, 8, 2, 9, 8, 1, 3. Find the mean.

• 5.1

• 5.2

• 5.3

• 5.4

73 = mean

75, 94, 32, 75, ___

• 87

• 88

• 89

• 90

If a teacher tutored five students and they subsequently scored 96, 94, 92, 87, and 81, what was the average score of the students whom the teacher tutored?

• 70

• 80

• 90

• 100

Susan’s scores on the first 3 projects is shown below:

Project 1: 18

Project 2: 15

Project 3: 16

Project 4? __

What does she need to make on Project 4 so that the average for the four projects is 17?

• 16

• 17

• 18

• 19