Table 4 Performance of the new flash flood hybrid models by Wilcoxon signed-rank test (two-tailed).

From: Novel Hybrid Evolutionary Algorithms for Spatial Prediction of Floods

No

Pair wise comparison

Number of positive differences

Number of negative differences

z-value

p-value

Significance

1

S-A-ICA vs. S-A-FA

143

58

−3.982

0.000

Yes

  1. (The standard p value is 0.05).