Hi,
I have a data set that looks like this:
> data
vara varb S PC
1 None 250 1 80
2 None 250 1 70
3 Some 250 1 60
4 Some 250 1 70
5 None 1000 1 90
6 None 1000 1 90
7 Some 1000 1 80
8 Some 1000 1 70
9 None 250 2 100
10 None 250 2 80
11 Some 250 2 70
12 Some 250 2 70
13 None 1000 2 100
14 None 1000 2 90
15 Some 1000 2 50
16 Some 1000 2 40
...
And so on. The last column is the dependent variable, and I have made
the other columns factors. As you can see, there are multiple scores for
each subject in each combination of conditions. How can I reduce the
dataset so that there is only 1 score per subject, per condition, for
further analysis? I can use tapply to get means, but I need a data.frame
for analysis (aov). Any ideas?
--
Chris
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