Quartiles Calculator is created as a web calculator for helping students practice various methods to find quartile of data set.

## What is Quartile ?

Quartile is a statistical measure used to divide a dataset into four equal parts or quarters. The quartiles divide a dataset into three points, with each point representing a quarter or 25% of the data. The quartiles of data is represented as under :

**First Quartile**(Q1)=((n+1)/4)^{th}Term also known as the lower quartile.- The
**second quartile**or the 50th percentile or the Median is given as: Second Quartile(Q2)=((n+1)/2)^{th}Term - The
**third Quartile**of the 75th Percentile (Q3) is given as: Third Quartile(Q3)=(3(n+1)/4)^{th}Term also known as the upper quartile. - The
**interquartile**range is calculated as: Upper Quartile – Lower Quartile.