A command-line tool written in Haskell that calculates and displays a frequency distribution for a given set of numbers. It supports both file-based input and an interactive mode.

• Calculates a comprehensive frequency distribution, including:
  • Sample Size
  • Range
  • Class Width
  • Class Intervals
  • Frequencies
  • Midpoints
  • Cumulative Frequencies
  • Relative Frequencies
  • Class Boundaries

You will need to have Haskell and Cabal installed to build and run the project. You can find instructions for installation on the Haskell website.

To get started, clone the repository and navigate into the project directory:

git clone https://github.com/justromeon/frequencyDistribution.git
cd codingbat

The program can be run in two modes:

Run the program without any arguments to enter the interactive mode. The program will prompt you to input the data set and the number of classes directly.

cabal run

Provide the path to a data file and the desired number of classes as command-line arguments. The data file should contain numbers separated by spaces or commas.

cabal run frequencyDistribution -- <file_path> <number_of_classes>

Example:

cabal run frequencyDistribution -- sample.txt 5

This will produce an output similar to the following:

Sample size: 10

Range: 23

Class Width: 5

Class intervals:
[(2,6),(7,11),(12,16),(17,21),(22,26)]

Frequencies:
[2,2,2,2,2]

Midpoints:
[4.0,9.0,14.0,19.0,24.0]

Cumulative f:
[2,4,6,8,10]

Relative f:
[0.2,0.2,0.2,0.2,0.2]

Class boundaries:
[(1.5,6.5),(6.5,11.5),(11.5,16.5),(16.5,21.5),(21.5,26.5)]