Variance Analysis

[amartino]

Hello. I'm trying to measure sales changes from 2013 to 2014 (full year...forecast). I have two sales channels.

There is something called quantity variance, which consists of the following:

2014 units - 2013 units * mix % (of sales units) 2013 * price for each channel 2013.

I don't really understand what this formula is getting at. Why would you include the budget mix as part of this calculation.

Thanks!!