How to plot a normal curve by "Normal Density" function in JSL?

Tue, 10 Feb 2009 20:08:34 GMT

Hi, I want to plot a nornal curve given a set of data by also pre-define the sigma and mean values.

How to use the function "Normal Density()"?
What's the arguments?

I could not find the details in JMP Help, which seems sucks in looking
some JSL functions.

Anyone can help me out?

Fred

Re: How to plot a normal curve by "Normal Density" function in JSL?

Wed, 11 Feb 2009 18:18:31 GMT

Fred,

The arguments are Normal Density(x, mu, sigma). For example, the code

Normal Density(98, 100, 10)

returns the value 0.039104269.

Just for fun, the code below draws a normal curve with sliders for the mean and sigma. You can modify the code to fit your purposes.

mu = 0;
sigma = 1;

New Window( "Normal Curve",
gdey = Graph Box(
Y Scale( -.05, .5 ),
X Scale( -10, 10 ),
XName( "y" ),
Pen Color( "red" );
Y Function( normal density(y, mu, sigma), y );
),
H List Box( Slider Box( -5, 5, mu, gdey << reshow ), Text Box( "mu" ) ),
H List Box( Slider Box( 0, 5, sigma, gdey << reshow ), Text Box( "sigma" ) )
);

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How to plot a normal curve by "Normal Density" function in JSL?

Re: How to plot a normal curve by "Normal Density" function in JSL?