Question

principal philippi used a random sample of 20 student records to determine how far, in miles, students live from the school. the results are shown below.
3, 4, 5, 3, 4,
5, 6, 5, 4, 3,
2, 3, 4, 5, 6,
4, 8, 4, 3, 2
what is the mean distance that his students live from the school, rounded to the nearest tenth?
o 4.1 miles
o 4.2 miles
o 8.0 miles
o 8.3 miles

Explanation:

Step1: Find the sum of the data

$3 + 4+5+3+4+5+6+5+4+3+2+3+4+5+6+4+8+4+3+2=84$

Step2: Calculate the mean

The mean $\bar{x}=\frac{\text{Sum of data}}{\text{Number of data points}}$. Here, the number of data points $n = 20$. So $\bar{x}=\frac{84}{20}=4.2$

Answer:

4.2 miles