Comparison Between Measures of Spatial Autocorrelation
Journal Title: International Journal of Mathematics and Statistics Invention - Year 2017, Vol 5, Issue 9
Abstract
This work is carried out with the view to analyze and compare Geary’s C and Moran’s I measures of spatial autocorrelation using the monthly rainfall statistics as the case study for the year 2014 as recorded in CBN Statistical Bulletin, 2014. Both measures were employed to analyze the data and from the empirical results computed, Moran’s I coefficient is 0.16 and 𝑟 2 =0.91 while Geary’s C is0.74 and 𝑟 2=0.87.These values signify positive autocorrelation or the idea that similar values on the map tend to cluster together.This implies that Geary’s C compares favourably with Moran’s I as regards to the data used. The scatter plots of Moran’s I and Geary’s C in figures 2 and 3 show that their relationship is linear and that either of the statistic could be used.
Authors and Affiliations
Ogoke Uchenna Petronilla, Oghenejese Millicent Avurake, Mbachu Hope Ifeyinwa
Keywords
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