Hi Jacob,

I once used FA = .98 - .63*CV as a VERY CRUDE approximation to the value added line for one company, based on the approximation of the FA of a moving average (naive) forecast at the various levels of volatility. I would advise AGAINST using something so crude and perhaps entirely inappropriate for the data at your organization.

I would suggest for each sku computing the FA you achieved, and the FA if you had used the naive "no-change" model and creating the scatterplot with both points for each SKU. This quickly becomes messy, so you'd want to experiment with visualizations. If you happen to come up with a good visualization, I'd love to share it in a blog post.

--Mike