Name________________________

__CALCULATING THE
MEAN #5--KEY__

**Directions**: Calculate the
*mean* for each set of numbers
below. To find the *mean* of a set of numbers, add all of the data together, then divide
that sum by the amount of numbers in the set.

Example: Daniel received the following scores on his Math tests: 100, 90, 80, 100, 90. Find his mean test score.

100
+ 90 + 80 + 100 + 90 = 460 total points 460/5
tests gives you a **mean of 92 points**

1) Joshua received the following scores on his Math tests: 80, 84, 100, 80, 70, 100, 60, 70. Find his mean score.

**644/8 = A mean of 80.5 points**

2) Melissa recorded the following heights of some of her classmates: 60 inches, 48 inches, 62 inches, 60 inches. Find the mean height of her classmates.

** 230/4
= A mean of 57.5 inches**

3) Alexander measured the shoe size of his classmates and received the following data: 8, 7, 8, 6, 10, 5, 10, 8, 6, and 6. Find the mean shoe size of his classmates.

**74/10 = A mean of 7.4 inches**

4) Jennifer recorded the following temperatures while researching her science project: 90, 60, 55, 60, 55, 75, 75, 70, 75, 80. Find the mean temperature that she recorded.

**695/10 = A mean of 69.5 degrees**

5) Emma received the following amounts as graduation gifts: $40, $25, $25, $50, $10, $20, $20, $30. Find the mean amount of her gifts.

**220/8 = A mean of $27.50 **

6) William earned the following amount while working his summer job each week: $90, $100, $90, $90, $100, $80, $80, $90, $100, $80, $90. What is the mean amount that he earned each week?

**990/11 = A mean of $90 **

7) Joseph read the following number of pages of his favorite book each night before bed: 14.5, 20, 10, 20, 40, 10, 10, 20, 40. What is the mean number of pages that he read every night?

**184.5/9 = A mean of 20.5 pages**

8) Emily did the following number of push-ups every day to get ready for soccer season: 29, 25, 30, 40, 50, 50, 50, 50. What is the mean number of sit-ups that she did each day?

**324/8 = A mean of 40.5 sit-ups**

9) Anthony earned the following amount for baby sitting his brother over summer break: $5, $20, $10, $10, $5, $10, $20, $10, $5, $30, $20, $30, $10, $5, $12.50. What is mean amount that he earned each day?

**202.5/15 = A mean of $13.50**

10)

**294/20 = A mean of 14.7 miles **