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. 2014 Feb 26;9(2):e90168. doi: 10.1371/journal.pone.0090168

Table 4. Analysis of variance (ANOVA) on mean values of gray treefrog (Hyla versicolor) days to metamorphosis and analysis of covariance (ANCOVA) on mean values of mass at metamorphosis with days to metamorphosis as covariate.

Dependent Variable
Effect Days to Metamorphosis Mass at Metamorphosis
 df 1,16 1,12
Chloride
 F 0.06 5.83
 P 0.808 0.033
Inoculum
 F 0.48 2.47
 P 0.498 0.142
Chloride x Inoculum
 F 0.00 4.00
 P 0.996 0.069
Days to Metamorphosis
 F 1.62
 P 0.228
Chloride × Days to Metamorphosis
 F 5.4
 P 0.039
Inoculum × Days to Metamorphosis
 F 2.46
 P 0.143
Chloride × Inoculum × Days to Metamorphosis
 F 4.06
 P 0.067

df = degrees of freedom; F = f-ratio; P = p-value; values in bold indicate statistical significance (p<0.05); values in bold indicate statistical significance (p<0.05).