152. Interquartile Range

IQR=Q3−Q1
Example
[1,2,3,4,5,6,7]

Step 1: Arrange the Data in Ascending Order

[1,2,3,4,5,6,7]

Step 2: Find the Quartiles

  1. Calculate the Median (Q2)
Median(Q2)=4
  1. Find First Quartile (Q1)

Q1 is the median of the first half of the dataset

Q1=2
  1. Find Third Quartile (Q3)

Q3 is the median of the second half of the dataset

Q3=5

Step 3: Calculate the Interquartile Range (IQR)

IQR=5−2=3