Question

A data set has 40 data points. Enter values to answer each of the questions below.

Answer 1

Answer:

20

10

20

Step-by-step explanation:

Answer 2

When the number of data points is odd the formula to find the Ranking of the Median is (n+1)/2, When the number of data points is even the ranking of the Median will be the AVERAGE of n/2 + n/2 +1, where n is the number of data points.

In our case the ranking of the Median is the average (20+21)/2 = 20.5.

1- How many points are below the Median =20

Lower half = 20, Upper half = 20 & Median = 20.5 (Don't forget Median is the ranking of data points).

Again the 1st Quartile is at 10.5, so 10 data points are below the 1st Quartile

and 20 points are between Q1 & Q3