Return the gmean value : Math extensions « Development « Ruby

Home
Ruby
1.ActiveRecord
2.Array
3.CGI
4.Class
5.Collections
6.Database
7.Date
8.Design Patterns
9.Development
10.File Directory
11.GUI
12.Hash
13.Language Basics
14.Method
15.Network
16.Number
17.Rails
18.Range
19.Reflection
20.Statement
21.String
22.Threads
23.Time
24.Tk
25.Unit Test
26.Windows Platform
27.XML
Ruby » Development » Math extensions 
Return the gmean value


def gmean(x)
  prod=1.0
  x.each {|v| prod *= v}
  prod**(1.0/x.size)
end

data = [1.1,2.3,3.3,1.2,4.5,2.1,6.6 ]

gm = gmean(data)  2.508411474

 
Related examples in the same category
1.Add function to Math module
2.Your own math function
3.Get mean value
4.Get hmean value
5.Get the median value
6.Get the mode value
7.Get variance value
8.Get sigma value
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.