What this calculator does
Index of qualitative variation works out measures diversity among categorical frequencies on a 0 to 1 scale using the IQV formula. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaIQV = K(100² − Σp²) / [100²(K − 1)], where K is the number of categories and p is each category’s percentage share
The inputs explained
| Field | What to enter |
|---|---|
| Category frequencies (comma separated) | A list of numbers, separated by commas or spaces. |