here are 13 of alis walk times to the nearest restroom (in seconds): 26, 34, 15, 62, 89, 71, 23, 13, 32, 54…
here are 13 of alis walk times to the nearest restroom (in seconds): 26, 34, 15, 62, 89, 71, 23, 13, 32, 54, 52, 50, 21. what is the first quartile?
Answer
Answer:
21
Explanation:
Step1: Arrange data in ascending order
13, 15, 21, 23, 26, 32, 34, 50, 52, 54, 62, 71, 89
Step2: Calculate position of first - quartile
$n = 13$, position $= \frac{n + 1}{4}=\frac{13+1}{4}=3.5$
Step3: Find first - quartile
The 3rd value is 21 and 4th value is 23. First quartile $=21+(23 - 21)\times0.5=21 + 1=21$