Frequency Distribution Builder

Organize data into frequency tables with cumulative statistics

Data Input

This frequency distribution builder is provided for educational purposes. Results are calculated using standard statistical methods.

Understanding Frequency Distributions

What is a Frequency Distribution?

A frequency distribution organizes data into classes (intervals) and shows how many data points fall into each class. It helps visualize patterns and the shape of the data distribution.

Key Terms

  • Frequency: Number of data points in a class
  • Relative Frequency: Frequency as a percentage of total
  • Cumulative Frequency: Running total of frequencies
  • Class Midpoint: Average of class boundaries
  • Class Width: Size of each class interval

Sturges' Rule

A guideline for choosing the number of classes: k = 1 + 3.322 × log₁₀(n), where n is the number of data points. This provides a good starting point, but you can adjust based on your data.