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Q1) Let's further suppose that there was good interrater reliability on these frequency counts of behaviours and that they are interval/ratio level of measure, normally distributed, and independent observations.

i) Enter data into an SPSS worksheet-one column for each variable (group membership, A; dependent variable, Y; and covariate, Xc).

ii) Run one-way ANOVA to compare mean levels of Y across groups on A factor (without the covariate) and also one-way ANOVA to compare mean levels of Xc, covariate, across groups on A factor (to see if scores on covariate differ across treatment groups).

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