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The problem is : "I performed IDW for EMF levels from cell phone towers. The resulting Mean Prediction error in cross-validation is -0.0081." I've read about Mean Prediction Error and RMS Prediction Error in IDW on ArcGIS websites. But nowhere is it mentioned about what conclusions to draw if the Mean Prediction Error has a negative value
Agreed. I too felt the issue of autocorrelation. Thanks once again
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