Formula For Calculating Lower And Upper Quartile

Quartiles are a set of values that divide a data set into four equal parts. The lower quartile (Q1) and upper quartile (Q3) are crucial for understanding the spread and distribution of data. This calculator helps you find these values easily.

1. Enter your data points, separated by commas.
2. Enter the total number of data points (n).
3. Click ‘Calculate’.

The formula for calculating quartiles is:

Q1 = (n/4)th value and Q3 = (3n/4)th value, where n is the total number of data points.

Comparison of Quartiles in Different Data Sets

• Quartiles help identify outliers and understand data distribution.
• To find the interquartile range (IQR), subtract Q1 from Q3.

What are quartiles?

Quartiles are values that divide a data set into four equal parts.