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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