Relationship between Months of Inventory and Price Changes in GVREB

Here is an update on the refined half-over-half price changes to months of inventory (3 month moving average) relationship mohican and I optimised last year.
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First the residual plots.



And the 95% CI fitted line.



We can see even with the deviation of last month we have high degree of confidence. It is easy to show a frequency component of seasonality so a high correlation is somewhat expected. Still, there ain't no purdy red dots on the bottom left and top right of the graph so it tells me a storm's a-brewin'.

And for completeness, the time plot.

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Now, that was 30 seconds of your life you will never get back. Carry on.