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Table 3 Matrices with results of tests for normality of the data produced using PAST (A, top) and including R-output of the Fligner–Killeen test (B, bottom) of homogeneity of variances (slope is short for septal slope factor)

From: Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position?

(A) SlopeFactor CO2 Latitude_SN pH
N 25 25 25 25
Shapiro–Wilk W 0.9377 0.8945 0.803 0.8347
p(normal) 0.1308 0.01399 0.000255 0.000917
Jarque–Bera JB 3.05 0.5951 3.32 2.821
p(normal) 0.2176 0.7426 0.1901 0.244
p(Monte Carlo) 0.0815 0.672 0.0676 0.0853
Chi2 1.4 2.36 2.04 3.96
p (normal) 0.23672 0.12448 0.15321 0.046594
Chi2 OK (N > 20) Yes Yes Yes Yes
Anderson–Darling A 0.5021 0.9992 1.957 1.519
p(normal) 0.1874 0.01023 3.80E−05 0.000489
(B) Fligner–Killeen test Chi2 Critical value (Chi2 table) Degrees of freedom p-value
Slope ~ age (Ma) 19.00 19.68 11 0.06
Slope ~ sea surface pH 8.67 10.22 8 0.37
Slope ~ [Ca2+] 15.74 16.92 9 0.07
Slope ~ Mg/Ca ratio 14.61 14.68 9 0.10
Slope ~ atmospheric CO2 17.15 18.31 10 0.07
Age (Ma) ~ Atmospheric CO2 3.60 3.94 10 0.96
Age (Ma) ~ sea surface pH 4.19 3.49 8 0.84
Age (Ma) ~ Mg/Ca ratio 4.73 4.17 9 0.86
Age (Ma) ~ [Ca2+] 2.80 3.33 9 0.97