Normality plot for two-way repeated measures ANOVA

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1

Hey all,

I have this output from a repeated measures ANOVA:

repeatedmeasures=aov(data=ProportionofCorrectTrials, Proportionofcorrecttrials ~ ConditionFirsttargetboundary + Error(ID/ (ConditionFirsttargetboundary)))

summary(repeatedmeasures)

Error: ID
Df Sum Sq Mean Sq F value Pr(>F)
Residuals 12 1.341 0.1117

Error: ID:Condition
Df Sum Sq Mean Sq F value Pr(>F)
Condition 2 0.5474 0.2737 6.644 0.00506 **
Residuals 24 0.9888 0.0412

Signif. codes: 0 ‘’ 0.001 ‘’ 0.01 ‘’ 0.05 ‘.’ 0.1 ‘ ’ 1

Error: ID:Firsttargetboundary
Df Sum Sq Mean Sq F value Pr(>F)
Firsttargetboundary 1 1.4948 1.4948 48.62 1.49e-05 ***
Residuals 12 0.3689 0.0307

Signif. codes: 0 ‘’ 0.001 ‘’ 0.01 ‘’ 0.05 ‘.’ 0.1 ‘ ’ 1

Error: ID:Condition:Firsttargetboundary
Df Sum Sq Mean Sq F value Pr(>F)
Condition:Firsttargetboundary 2 0.0320 0.01598 0.867 0.433
Residuals 24 0.4423 0.01843

Error: Within
Df Sum Sq Mean Sq F value Pr(>F)
Residuals 162 4.921 0.03037

I then tried to create a normality plot:

resid <- aov.out.pr[[3]][,"Residuals"]
qqnorm(resid)
qqline(resid)

I am able to create the plot successfully, but I would be grateful if one could reassure me as to whether this is the right way to do it?

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