Relative Frequency Calculator

Your details

Choose "Pre-counted" if you already have a frequency table. Choose "Raw data" to let the calculator tally counts for you.
Enter the count for each class, separated by commas, spaces, or new lines.
Optional comma-separated names for each class. Leave blank to use "Class 1, Class 2..." or the data values themselves.
Re-order the distribution table without changing the math.
Precision shown for relative frequency proportions.
Total observations (n)Moderately concentrated
50
Number of classes5
Largest class share30%
Mode (most frequent class)Class 3
Relative frequenciesClass 1: 8 / 50 = 0.16 (16%) | Class 2: 12 / 50 = 0.24 (24%) | Class 3: 15 / 50 = 0.3 (30%), ...
Total observations50
Classes5

Across 50 observations in 5 classes, the largest class holds 30% of the data.

  • Each relative frequency is that class count divided by the total, so every value lands between 0 and 1 (0% to 100%).
  • All relative frequencies sum to exactly 1 (100%), a quick sanity check that no observation was missed or double-counted.
  • The mode (most frequent class) is Class 3. The mode is always the tallest bar in a frequency histogram.

Next stepRun the cumulative percent column down the table: it reaches 100% at the last class and lets you answer "at or below" questions (percentile lookups) at a glance.

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