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Average Ruby Arrays

I have three Ruby arrays:

[1, 2, 3, 4] [2, 3, 4, 5] [3, 4, 5, 6]

How can I take the average of all three numbers at position 0 , then place 1 , etc. and save them in a new array named "Average"?

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 a = [1, 2, 3, 4] b = [2, 3, 4, 5] c = [3, 4, 5, 6] a.zip(b,c) # [[1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5, 6]] .map {|array| array.reduce(:+) / array.size } # => [ 2,3,4,5]
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Try the following:

 arr = ([1, 2, 3, 4] + [3, 4, 5, 6] + [2, 3, 4, 5]) arr.inject(0.0) { |sum, el| sum + el } / arr.size

Concatenation can be done in several ways, depending on how you store your arrays.

Like syntactic sugar, you can do it like this:

 arr.inject(:+).to_f / arr.size
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Source: https://habr.com/ru/post/1489925/

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