Question

finding the mean of a sample
text messages sent

7
10
100
15
1
12
3
7
17
38
what is the mean of this sample, which consists of 10 values randomly selected from the table?
mean = \\(\frac{7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38}{10}\\)
the mean of the third sample is \\(\square\\).

Explanation:

Step1: Sum all sample values

$7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38 = 210$

Step2: Divide sum by sample size

$\text{Mean} = \frac{210}{10}$

Answer:

21