How to calculate interquartile range on Excel?
Understand the Problem
The question is asking how to compute the interquartile range (IQR) using Microsoft Excel. The IQR is a measure of statistical dispersion and can be calculated by finding the difference between the first quartile (Q1) and the third quartile (Q3) of a dataset.
Answer
Use `QUARTILE.EXC` to find Q1 and Q3, then subtract Q1 from Q3.
To calculate the interquartile range in Excel, you find the first and third quartiles using the QUARTILE.EXC function and subtract the first quartile from the third quartile.
Answer for screen readers
To calculate the interquartile range in Excel, you find the first and third quartiles using the QUARTILE.EXC function and subtract the first quartile from the third quartile.
More Information
The interquartile range (IQR) is a measure of statistical dispersion and is calculated as the difference between the third and first quartiles. This represents the middle 50% of your data.
Tips
A common mistake is to use the QUARTILE.INC function instead of QUARTILE.EXC, which includes the median in the calculation and might yield different results. Ensure to distinguish between the two based on your dataset requirements.
Sources
- Microsoft Excel documentation - QUARTILE.EXC function - support.microsoft.com
- How to Calculate Interquartile Range in Excel - Statology - statology.org
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