Anova Normality Assumption Spss. Independent observations or independent and identically distributed variables. N0 σ But what its really getting at is.
Normality of difference scores for three or more observations is assessed using skewness and kurtosis statistics. Interpretation of results including the Kolmogorov-Smirnov Shapiro-Wilk. The normal distribution peaks in the middle and is symmetrical about the mean.
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1 Assignment SPSS ANOVA Test Question e. Data does not need to be perfectly normally distributed for the tests to be reliable. The one-way ANOVA is considered a robust test against the normality assumption. Can be used for MANOVA.
