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__p2
2009 May 22
2
Error in FUN with tapply and by
...","na","na",110,250,380,520,520
"Round","NonPrefHand","Baseline",0,"S01","na","na",220,360,460,620,620
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I computed some values (times) from the raw data
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t_p1=PenDG
t_c1=PenUG-PenDG
t_p2=PenDS-PenUG
t_c2=PenUS-PenDS
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And I put those times in a data frame called "times". For each of these
times, I want to subtract the average for "Baseline" trials from the average
for "Integrated" trials within the "Grip" and "Technique&q...