Average

Simple gem to calculate mean, median and mode from an array.

Installation

Add this line to your application's Gemfile:

gem 'average'

And then execute:

$ bundle

Or install it yourself as:

$ gem install average

Usage

Get Median

$ [3, 4, 5, 2, 3, 1].mean
$ 3.0

Get Mode

$ [2,4,6,14,21,24,229,24,24,39].mode
$ 24

It gives back an array due that could be possible to have more than one mode in a array

$ [1, 2, 2, 2, 3, 3, 7, 7, 7, 9].mode
$ [2, 7]

But if you want to have only a unique mode, you can use 'unique_mode' method (Only for Ruby versions bigger than 1.8.7 -> http://apidock.com/ruby/v1_8_7_72/Enumerable/max_by).

$ [1, 2, 2, 2, 3, 3, 7, 7, 7, 9].unique_mode
$ 2

Get Median

$ [3,4,5].median
$ 4

All methods described aboved can handle an array of integers, floats, strings or a mixed array with all of them

$ [3, "4", 5, 2.0, 3, "1.0"].mean
$ 3.0

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request