Re: Finding the p-value using MatLab

On 8/22/2005 5:40 AM, Konrad Viltersten wrote: 
I'm trying to use MatLab to compute p-values for
different sets of data that i "play" with. However,
i seem to have big time trouble finding the right
tools for that. Any suggestions?

I've asked on a MatLab-group before but there
were rather few replies (as in zero). I was hoping
somebody here had some hints.

Let's say i have the following:
val = cdf ('chi2', spot, 99)
which allows me to simply check what cdf we have
accumulated in the point of spot.

Now, i wish to go the other way around and given the value
of val, get the corresponding value of spot.


help stats

As we're at it - is there a nice way of obtaining the
confidence interval (provided the data above)?

Confidence interval for a chi-squared distribution? Depends on what test you are considering. You might have to compute it yourself...the formulas are not that difficult to program into MATLAB

--
Paige Miller
pmiller5@xxxxxxxxxxxxxxxx
http://paiges-page.net

It's nothing until I call it -- Bill Klem, NL Umpire
If you get the choice to sit it out or dance,
  I hope you dance -- Lee Ann Womack
.

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