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Table 3 Two-sample Kolmogorov-Smirnov D statistic and P-values to test significance of difference between the and Fractal Dimension Index (FRAC) distributions among unburned islands within fires in the Inland Pacific Northwest from 1984 to 2014 based on their degree of persistence

From: Characterizing persistent unburned islands within the Inland Northwest USA

Degree of persistence Area FRAC Number of observations
D P D P
1 vs. 2 0.357 <0.001 0.3533 <0.001 n1 = 749 179 n2 = 64 765
1 vs. 3 0.4927 <0.001 0.4857 <0.001 n1 = 749 179 n3 = 2 771
1 vs. 4 0.6129 <0.001 0.6023 <0.001 n1 = 749 179 n4 = 87
2 vs. 3 0.1357 <0.001 0.1324 <0.001 n2 = 64 765 n3 = 2 771
2 vs. 4 0.2559 <0.001 0.249 <0.001 n2 = 64 765 n4 = 87
3 vs. 4 0.1202* 0.1748* 0.1166* 0.2018* n3 = 2 771 n4 = 87
  1. *Indicates P > 0.05