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Northern League R4

Started by vexillia, September 23, 2025, 01:24:51 PM

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Cantabrigian

Quote from: vexillia on September 29, 2025, 11:59:56 AMhttps://blog.vexillia.me.uk/2022/09/adlg-v4-super-armies.html
https://blog.vexillia.me.uk/2022/09/adlg-size-matters.html
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Fascinating stuff, thanks! 

I think that a lot of what you're seeing is regression to the mean - with small numbers of samples you see a lot more random variation.  For example, take your V3 chart, and put your finger on it to cover up any results with less than 125 games, and the relationship looks a lot less clear.


vexillia

Quote from: Cantabrigian on September 29, 2025, 12:46:33 PMI think that a lot of what you're seeing is regression to the mean - with small numbers of samples you see a lot more random variation.  For example, take your V3 chart, and put your finger on it to cover up any results with less than 125 games, and the relationship looks a lot less clear.

I agree.  I made the same point myself, many times.  With a small number of games (and probably players and opponents) the average is all over the place.

The important thing is that the mean is 50% suggestive of few, if any, anomalies in the armies once player & opponent factors have been smoothed out.

Cantabrigian

I tried to get over to the regression to the mean thing by separating the armies into buckets depending on how many games they'd been used in, then taking the average efficiency for each bucket.

I'm not sure if any meaningful conclusions can be drawn from this graph.

And that's hoping that I got the right data source...

vexillia

Quote from: Cantabrigian on October 04, 2025, 07:09:14 PMAnd that's hoping that I got the right data source...
Looking at the results, you've analysed the combined results from V3 and V4.

I think they belong to separate data sets as the rules changed between versions.

Cantabrigian

Quote from: vexillia on October 04, 2025, 07:40:06 PMLooking at the results, you've analysed the combined results from V3 and V4.

I think they belong to separate data sets as the rules changed between versions.

I'd imagine that you're right.