Re: TI-M: Stats Question

To: ti-math@lists.ticalc.org
Subject: Re: TI-M: Stats Question
From: "Daniel Bishop" <danb2k@hotmail.com>
Date: Tue, 12 Sep 2000 00:56:23 GMT
Reply-To: ti-math@lists.ticalc.org


In the meantime:

normalcdf(z1,z2)=fnInt(normalpdf(x),x,z1,z2)

but I think that fnInt has a different syntax on the 89.

>From: "Dan Leet" <dl33t@hotmail.com>
>Reply-To: ti-math@lists.ticalc.org
>To: <ti-math@lists.ticalc.org>
>Subject: Re: TI-M: Stats Question
>Date: Mon, 11 Sep 2000 20:50:45 -0400
>
>
>download Stat/List Editor, you will never EVER regret it.  It does
>everything the 83 can and more, faster too.  the syntax is nearly 
>identical:
>normPdf(x[,mu, sigma])
>hope this helps - DL
>----- Original Message -----
>From: <JayEll64@aol.com>
>To: <ti-math@lists.ticalc.org>
>Sent: Monday, September 11, 2000 7:16 PM
>Subject: Re: TI-M: Stats Question
>
>
> >
> > In a message dated 9/11/00 4:05:54 PM Mountain Daylight Time,
> > danb2k@hotmail.com writes:
> >
> > > I think it's 1/sqrt(2*pi*e^(x^2))
> >
> > That would be the one ;)
> >
> > >  However, iff you have an 83 or 83+, you can just use normalpdf()
> >
> > I have an 89...anyone know if there's a function to go between z-scores
>and
> > percentages (of area of the normal curve) on the 89?
> >
> > I was trying to figure out what the function was for a normal curve was
> > yesterday and tried solving for equations like y = e^(-a*x^(2b)) and y =
> > a/(cosh(bx)^2)...didn't occur to me that it was y = a*e^(-b*x^2) ;)  Oh
> > well...
> >
> > JayEll
> >
> >
>

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