Range: what it means and how to read it

In the report: range — max − min.

How to read it

The width of the span of values. It depends on the two extremes only, so one odd value changes it — iqr is steadier.

In plain words

Two classes both have an average mark of 70, and a teacher wanted to know whether they are alike. In class A the marks go from 65 to 75, so the range is 10. In class B they go from 30 to 100, so the range is 70. Now she can see at once that the students in class B are far more spread out. But the range looks only at the two ends. If the 30 was a student who was ill on the day, one odd mark stretches the range, and then iqr, the spread of the middle half of the marks, is steadier.

How it is computed

range = max − min

Where you see it

Get it in your sheet

One formula in a cell gives the whole report, Range included. ALS Stats is a free add-on for Google Sheets™.

Install ALS Stats from Google Workspace Marketplace (opens in a new tab)