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Question: Frequency plot: quantiles

Question:Frequency plot: quantiles

becca 375 Maple
plot
March 29 2010
0

Hi

Does anyone know how I can shade say the top 5% of a frequency plot. Imagine the frequency plot is generated in the following way:

 

with(Statistics):with(plots):
N := RandomVariable(Normal(0, 1)):
A := Sample(N, 500):
Q := FrequencyPlot(A, thickness = 3):
 

I thought

P:=FrequencyPlot(A,x=-3..-1,fill=true,colour=grey):
display(P,Q):

would work but no!

any good ideas??

thanks v much
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