Question

min q1 median q3 max
7 9 12 15 18
about 75% of hair salons in jamesville employ fewer than how many stylists?
choose 1 answer:
a 7
b 9
c 12
d 15
e 18

Explanation:

Step1: Recall quartile concept

The first quartile ($Q_1$) represents the 25 - th percentile, the median (second quartile $Q_2$) represents the 50 - th percentile, and the third quartile ($Q_3$) represents the 75 - th percentile.

Step2: Identify the value

We want to find the number such that about 75% of hair salons employ fewer stylists. This value is the third - quartile ($Q_3$). Given $Q_3 = 15$.

Answer:

D. 15