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Talk:Moran's I

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Second Figure

[edit]

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)[reply]

Suggest replacing with this, simpler, figure
Moran's I statistic computed for different spatial patterns. Using 'rook' neighbors for each grid cell, setting for neighbours of 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 ). Bottom right shows an 'ink blot' or spreading pattern with positive autocorrelation.
WikiNukalito (talk) 20:25, 17 April 2024 (UTC)[reply]