Kelsey keeps track of how much money she makes each time she babysits. For the last 10 jobs she made: $ \$ 7.50, \$ 10.50, \$ 5.00, \$ 4.50, \$ 3.50, \$ 7.50, \$ 4.00, \$ 10.00, \$ 7.50 $, and $ \$ 5.00 $.
What is the mean amount of money Kelsey made?
A. $ \$ 5.50 $
B. $ \$ 6.25 $
c. $ \$ 6.50 $
D. $ \$ 7.00 $
E. $ \$ 7.50 $

Answer

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Answer

Calculate the mean: $\$6.50$

Steps

Step 1 ：Add the amounts: $\$7.50 + \$10.50 + \$5.00 + \$4.50 + \$3.50 + \$7.50 + \$4.00 + \$10.00 + \$7.50 + \$5.00 = \$65.00$

Step 2 ：There are 10 jobs, so divide the total by 10: $\frac{\$65.00}{10}$

Step 3 ：Calculate the mean: $\$6.50$