Talk:Moran's I

Second Figure
The second figure introduces a bunch of stuff not explained or even mentioned elsewhere in the article.
 * What is a hand map? Hand drawn?
 * What is the q statistic?
 * What is a strata? What is their purpose and how are they chosen?
 * Some of the ps and qs have subscripts denoting rather strange combinations of these strata. What motivates this? What does it mean when there is no subscript?

I don't think any of this stuff is standard in discussions of Moran's index (nothing I've ever come across...) and it's so confusing I'd suggest deleting it. WikiNukalito (talk) 19:39, 17 April 2024 (UTC)


 * Suggest replacing with this, simpler, figure
 * Moran's I example.png' neighbors for each grid cell, setting $$w_{ij}=1$$ for neighbours $$j$$ of $$i$$ and then row normalizing the weight matrix. Top left shows anti-correlation giving a negative I. Top right shows a spatial gradient giving a large positive I. Bottom left shows random data giving a value of I near 0 (or $$1/(N-1) \simeq 0.04$$). Bottom right shows an 'ink blot' or spreading pattern with positive autocorrelation.]] WikiNukalito (talk) 20:25, 17 April 2024 (UTC)