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One-Way ANOVA with Repeated Measurement. Fixed and Random Effects.

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Presentation on theme: "One-Way ANOVA with Repeated Measurement. Fixed and Random Effects."— Presentation transcript:

1 One-Way ANOVA with Repeated Measurement

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3 Fixed and Random Effects

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9 'data.frame': 144 obs. of 4 variables: $ id : int 1 2 3 4 5 6 7 8 9 10... $ trat : Factor w/ 3 levels "C","CB","FT": 2 2 2... $ y : num 80.5 84.9 81.5 82.6 79.9 88.7 94.9... $ tempo: Factor w/ 2 levels "dopo","prima": 2 2 2... > fit <- aov(y ~ tempo*trat + Error(subj/tempo))

10 > summary(fit) # Table 12.23 Agresti (a parte le SSQ type III) Error: subj Df Sum Sq Mean Sq F value Pr(>F) trat 2 644 322.1 6.201 0.00334 ** Residuals 69 3584 51.9 Error: subj:tempo Df Sum Sq Mean Sq F value Pr(>F) tempo 1 275.0 275.01 9.704 0.00268 ** tempo:trat 2 307.3 153.66 5.422 0.00650 ** Residuals 69 1955.4 28.34

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