Question

1. 25, 7, 17, 17, 9

the number of books read by 5 students is shown above.
determine the mean of the set of data.
a. 15 b. 16 c. 17 d. 25

1. in which data set below is the mean 3?

a. 2, 2, 2, 4, 5
b. 2, 2, 3, 4, 5
c. 1, 1, 1, 3, 4
d. 3, 3, 3, 3, 4

Explanation:

Step1: Sum the data for Q3

$25 + 7 + 17 + 17 + 9 = 75$

Step2: Calculate mean for Q3

$\text{Mean} = \frac{75}{5} = 15$

Step3: Test Set A for Q5

$\frac{2+2+2+4+5}{5} = \frac{15}{5} = 3$

Step4: Verify other sets (Q5)

Set B: $\frac{2+2+3+4+5}{5} = \frac{16}{5}=3.2$; Set C: $\frac{1+1+1+3+4}{5}=\frac{10}{5}=2$; Set D: $\frac{3+3+3+3+4}{5}=\frac{16}{5}=3.2$

Answer:

1. For question 3: A. 15
2. For question 5: A. 2, 2, 2, 4, 5