Relative Frequency Calculator

Work out relative frequency instantly with clear inputs, formula shown and shareable results.

About Relative Frequency Calculator

Relative frequency divides each class count by the total, giving proportions that always sum to 1. Expressed as percentages they make distributions with different sample sizes directly comparable.

Formula

Relative frequency

rᵏ = fᵏ / Σf

Worked example

With the default values below, Relative Frequency Calculator returns Relative frequency of that class of 0.36666667. Change any input above and every figure here is recalculated in your browser.

Inputs used

Class frequencies: 8, 14, 22, 11, 5
Focus on class numberaccepts 1–100: 3

Results

Relative frequency of that class: 0.36666667
As a percentage: 36.6667 %
Total frequency: 60
All relative frequencies: 0.1333, 0.2333, 0.3667, 0.1833, 0.0833

Step by step

1Values used
2Relative frequency
3Relative frequency of that class= 0.36666667
4As a percentage= 36.6667 %
5Total frequency= 60
6All relative frequencies= 0.1333, 0.2333, 0.3667, 0.1833, 0.0833

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or fees or charges into account.
Figures are rounded for display to 8 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

For frequencies 8, 14, 22, 11, 5?

The total is 60, so the third class has relative frequency 22/60 ≈ 0.3667, that is 36.67%.

Do the relative frequencies sum to 1?

Yes, exactly, since every observation belongs to precisely one class.