Question

The number of puppies that get adopted each week from Pete's shelter are given as shown below.
What is the number of puppies adopted during week 4 if the mean for the above data is 12?

• A. 12
• B. 16
• C. 15
• D. 10

Answer 1

The correct option is D 10

Mean = $\frac{Sumofalldatapoints}{Numberofdatapoints}$

We know that mean = 12

Substituting the value of mean, we get :
12 = $\frac{12+16+12+x+10}{5}$

12 × 5 = $\frac{50+x}{5}$ × 5
60 = 50 + x
60 − 50 = 50 + x − 50
10 = x

Thus, the number of puppies adopted during week 4 is 10.