How To calculate Weighted Averages in Excel

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In this video I explain how to calculate a weighted average in Excel. • The formula is very simple: • sumproduct(values_array,weights_array)/Sum(weights_array). • Check out my video on how to do the same thing in r, which is much easier:    • How to calculate weighted average in R   • Let me know if you have any questions, comments or requests. • I'll try and upload the example video as soon as i can :)

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