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. 2021 Aug 10;9(8):1704. doi: 10.3390/microorganisms9081704
Test Leaves Stem Roots
N 25 25 25
Shapiro-Wilk W 0.842 0.438 0.3351
p(normal) 3.217 × 10−9 9.652 × 10−9 1.246 × 10−9
p (Monte Carlo) 0.0001 0.0002 0.0001
Conclusion: the three distribution are not Gaussian (normal). We must use a non-parametric test.