Question

Hailey read 5 books in January, 8 books in February, 12 books in March, and 15 books in April. What is the mean(average) number of books she read over the months?

Answer 1

Answer:

10

Step-by-step explanation:

Add the number of books and divide the sum by the number of months.

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Answer 2

Given data = 5, 8, 12, 15

$Mean(average) = \frac{sum\: of \: the \: data}{no. \: of \: data}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{5 + 8 + 12 + 15}{4}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{40}{4}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 10$

Hence, she read an average of 10 books over the months.