Mean (Average)

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Show your work for each problem.

1.
What is the mean of , , and ?
1. a)3
2. b)6
3. c)4
4. d)12
2.
Find the mean of , , , and .
3.
A student scored , , on three tests. Find the mean score.
4.
Which formula correctly shows how to calculate the mean?
1. a)Count ÷ Sum
2. b)Sum × Count
3. c)Sum ÷ Count
4. d)Sum + Count
5.
The temperatures for 4 days were , , , and . What is the mean temperature?
6.
A basketball player scored , , , , and points in five games. Find the mean points per game.
7.
The mean of 4 numbers is . What is the sum of these 4 numbers?
1. a)11
2. b)4
3. c)19
4. d)60
8.
Find the mean: , , , , .
9.
Three friends have a mean age of years. Two of them are and years old. How old is the third friend?
10.
A student has test scores of , , , and . What score does she need on the 5th test to have a mean of ?
11.
The mean of , , and is . What is ?
1. a)40
2. b)30
3. c)20
4. d)10
12.
Find the mean of , , , and .
13.
The mean of 6 numbers is . If one number () is removed, what is the new mean of the remaining 5 numbers?
14.
A class of 20 students has a mean test score of . Another class of 30 students has a mean of . What is the combined mean score for all 50 students?
15.
The prices of 5 items are 12€, 8€, 15€, 10€, and 20€. Which statement about the mean is TRUE?
1. a)The mean is 15€
2. b)The mean is 10€
3. c)The mean is 13€
4. d)The mean is 12€