cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Submit your abstract to the call for content for Discovery Summit Americas by April 23. Selected abstracts will be presented at Discovery Summit, Oct. 21- 24.
Discovery is online this week, April 16 and 18. Join us for these exciting interactive sessions.
Choose Language Hide Translation Bar
lwx228
Level VIII

Does JMP calculate the "cumulative density function" of CDF?

I'm searching for this code for the documentation, but I don't know what it means.

 

Get expert help.Thanks!

 

Names Default To Here( 1 );
/* Generate random values, Normal(0,1) */
Y = J( 150, 1, Random Normal() );

/* CDF function */
{Quant, CumProb} = CDF( Y ); Wait(0);

/* Draw empirical and theorical CDF */
New Window( "Empirical CDF",
	Graph Box(
		X Scale( -3, 3 ),
		Y Scale( 0, 1 ),
		Pen Color( "red" );
		For( i = 2, i <= N Row( Quant ), i++,
			H Line( Quant[i - 1], Quant[i], CumProb[i] );
			V Line( Quant[i - 1], CumProb[i - 1], CumProb[i] );
		);
		i = N Row( Quant );
		V Line( Quant[i], CumProb[i], 1 );
		Pen Color( "blue" );
		Y Function( Normal Distribution( q ), q );
	)
);
2 REPLIES 2
lwx228
Level VIII

Re: Does JMP calculate the "cumulative density function" of CDF?

I don't know whether "cumulative distribution function" and "cumulative density function" are the same.

mzwald
Staff

Re: Does JMP calculate the "cumulative density function" of CDF?

There is no cumulative density function. It is probably meant to have the meaning of cumulative distribution function.
Here is the topic help on the CDF() function:
https://www.jmp.com/support/help/en/15.0/#page/jmp/matrix-functions.shtml?os=win&source=application#...