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Asked: 2026-05-17T02:10:07+00:00

When trying to plot a normal PDF with mean=0 and standard deviation=20 using the

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When trying to plot a normal PDF with mean=0 and standard deviation=20 using the MATLAB command normpdf() I get weird results, see picture.

alt text

The code used to plot the figure is as follows:

plot(normpdf((-100:0.1:100),0,20))

What is the correct way of using this function?

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1 Answer

  1. Editorial Team

    When you call plot with ONE argument, it plots those numbers on the y axis, using the index numbers of those values for the x axis. If you wanted the x axis scaled properly, you had to provide them in the first place. Thus…

    x = -100:0.1:100;
plot(x,normpdf(x,0,20),'-')
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