The numbers below show the grade each student received on the math exam:
Sam received 38
Adam received 40
John received 43
Katie received 45
Joy received 49
What was the mean number of grades the students received?
a. 35
b. 43
c. 48
d. 50
Solution: b
The Steps:
The mean value of any set of numbers indicates the average of those numbers. The average of the numbers is calculated by adding all the numbers and dividing them by how many times they occurred. For this example it will be as follows:
38 + 40 + 43 + 45 + 49 = 215
215 / 5 = 43
(see post 08-31 and 10-04)
For additional information on this subject go to : How to Find the Mean
©Copyright 2007.Najwa S. Hirn. All rights reserved.
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