Please explain 15 people were asked how many nights a month

15 people were asked how many nights a month they study. Here are their answers: What s the median of this sample?

Solution

Given

no. of nights they study in ascending order

4 ,8,8,12,13,15,19,20,20,20,24,26,27,29,30

if the number of observations is odd then

Median =[(n+1)/2]th value of observations arrangend in ascending order or descending order

here n=15 so then number of observations is odd

median =[(15+1)/2]th value =[16/2] th value =8 th value

since 8 th value is 20 so

median =20 answer