How To Calculate Iqr By Hand

Introduction & Importance

The Interquartile Range (IQR) is a measure of statistical dispersion, representing the range between the first quartile (Q1) and the third quartile (Q3) of a dataset. It’s crucial for identifying outliers and understanding the spread of data.

For more information, see:

• NIST’s Guide to the Statistical Quality Control Handbook
• Statistics How To’s IQR Calculator