Hi Andy,
If you could provide a sample data set, it would help others to give a
solution.
I suggest look at the data and select a model, then anova. Take group as one
variable, record time (1 to 24 ) as the second variable and the week day
(Monday to Friday) as the third variable. Then test the interaction between
three variables at first. I hope the following code helps.
df <- data.frame(value = rnorm(24*5*5),
group = rep(1:5,5*24),
time = rep(1:24,each=5),
day = rep(c("M","T","W","R","F"),each=24))
anova(lm(value ~ group*time*day,data=df),lm(value ~
group*time*day-group:time:day,data=df))
-----
A R learner.
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