Exact(18)
However, it is important to note that this violation of assumption of normality is quite common with large samples (Pallant, 2007).
Fig. 1 Average scores between groups are significantly different from each other atp < 0.01 using Tamhane due to violation of assumption of homogeneity of variances.Bars represent one standard deviation from the mean.Larger circles represent larger numbers of participants earning that total quiz score.
To avoid the violation of assumption of normal distribution in the above statistical analysis, 173 quantitative phenotypes were checked for their normality by Shapiro-Wilk tests [43] before GWA scans.
Nonetheless, the heat treatment resulted in a significant reduction in symbiont densities compared to both pre-bleached levels and the non-bleached controls (repeated measures ANOVA using Greenhouse-Geisser correction for violation of assumption of sphericity, F(1.088,88.144) = 137.119, p<0.001; within-subject contrasts, F 1,81) = 153.654, p<0.001).
No violation of assumption was observed.
This suggests a violation of assumption (2) that patients had their treatment chosen randomly.
Similar(42)
Therefore the fact that these values exceed the limits should not be interpreted as a violation of assumptions.
We examined residuals to check for violation of assumptions.
Violation of assumptions to be met for parametric testing was identified by inspecting residuals from statistical models and eliminated, if necessary, by appropriate transformation of data.
In case of violation of assumptions, robust ANOVA can used [ 71].
Data were processed with SPSS 15.0 and the sample was checked for violation of assumptions.
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