weighted average for an array

Hey

Can someone please tell me how to use weighted average for an array

[Adam]

What do you mean by 'how to use it'? How you use it depends entirely on the context and generally you know what you want to use it for before you calculate it in the first place!

[Anisha Varughese]

I did not ask 'what should I use weighted average for.' I was talking about the code or syntax which i can use.

[Adam]

That's why I asked what do you mean by 'how to use it'. If you mean how you calculate it rather than how you use it then simply

sum( weights .* array )

will give you the answer, assuming weights is another array of length equal to array

[Adam Danz]

There isn't enough information in your question to form a useful answer. Weighted averages can be used in many ways. From what we currently know, you have a weighted average and you're asking how to use it or you're asking for code that uses weighted averages. The question is unclear.

[dpb]

sum(weights.*array)

is ok if sum(weights) == 1; the general rule is

sum(weights.*array)/sum(weights)

Answer 1

[Anisha Varughese]

Thank you.