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Question with the Tool: Cluster and Outlier Analysis (Anselin Local Moran's I) (Spatial Statistics)

Question asked by HEY_Candice on Feb 9, 2015
Latest reply on Feb 10, 2015 by HEY_Candice

Hello everyone!


I have a statistic problem with the tool "Cluster and Outlier Analysis (Anselin Local Moran's I) (Spatial Statistics)".

On the web site ArcGIS Help 10.1  is the formula of Local Moran 'I.

There is a parameter Si2. Based on the literature, this parameter muss be a variance. But the formula of this parameter Si2 is not the same as a normal variance.

It's hard to describe the problem only in text, so I've made a PDF-Daten in attachment for better understanding.


Is there any special mathematical sinn of this formula of Si2 in ArcGIS or is that just wrong??

Is the calculation in the toolbox based on this wrong formula also injustice?


I'm looking forward to your answer! Thanks a lot!