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kmandreza/Calculating the mean of an array of numbers

Created December 31, 2012 23:55
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Write a method mean which takes an Array of numbers as its input and returns the average (mean) value as a Float. For example, mean([1,2,3]) # => 2.0 mean([4.5, 0, -1]) # => 1.1666666666666667 mean([-100, 100]) # => 0.0
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Calculating the mean of an array of numbers
def mean(array)
(array.inject { |sum,x| sum + x }).to_f / array.length
end
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