[R] Question about which kind of plot to use
Max
mnevill at exitcheck.net
Wed Dec 19 23:43:35 CET 2007
Hi Everyone,
I've got a question about data representation. I have some psychometric
data with 5 scores for 15 different groups. I've been asked to show
some kind of mean plots. The data below is the mean and SD for a given
group, unfortunately my employer doesn't want me posting full datasets.
:(
The groups V,W,X,Y,Z are divided into Bottom, (B), Middle (M) and Top
(T). An example of my data is shown below.
Score 1
Mean SD
B M T B M T
V 86.9 13.0 88.8 16.9 2.0 10.5
W 16.1 96.1 17.7 2.2 4.6 1.7
X 50.7 61.1 74.7 4.7 3.7 7.6
Y 68.5 99.7 37.6 6.0 8.0 2.3
Z 92.7 22.3 69.4 6.5 1.2 2.2
What I did before was a standard mean plot:
plotMeans(w$score1, w$Factor,
error.bars="sd",xlab="Factor",ylab="Score",main="Group W Score 1 Plot")
However, with 15 groups and 5 scores this turns into 75 individual
graphs. Is there a way to layer mean plots? Or show several mean plots
in the Same graph? Any ideas or suggestions would be great.
thanks,
-Max
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