Question

1. in which data set below is the mean 5?

a. 4, 5, 5, 8
b. 1, 2, 3, 6
c. 5, 5, 6, 7
d. 4, 4, 5, 7

Explanation:

Step1: Calculate mean for Set A

Mean = $\frac{4+5+5+8}{4} = \frac{22}{4} = 5.5$

Step2: Calculate mean for Set B

Mean = $\frac{1+2+3+6}{4} = \frac{12}{4} = 3$

Step3: Calculate mean for Set C

Mean = $\frac{5+5+6+7}{4} = \frac{23}{4} = 5.75$

Step4: Calculate mean for Set D

Mean = $\frac{4+4+5+7}{4} = \frac{20}{4} = 5$

Answer:

D. 4, 4, 5, 7