Calculate probability of T value

[Brock-15]

I know this is a very basic question, but I have summary statistics only (not
the raw data) and I want to do a one sample t-test.  What is the best way to
go about this?

Calculate T and then find the probability of that statistic?  I know I can use
TDIST in Excel, but what is the equvialent in SPSS?  I am trying to work
through some examples online and I am not getting the same
results....obviously it is me and not SPSS.

In short, I actually have never calculated p by hand summarized data and
simply want to give it a shot.

Any help will be greatly appreciated!

Brock

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[Ruben Geert van den Berg]

Dear Brock,
 
This seems to work (2 sided probability):
 
data lis free/tvalue df.
begin data
1 1 1,96 1000
end data.
comp sig=2*(1-cdf.t(tvalue,df)).
exe.

Kind regards,
 
Ruben van den Berg


 



 

> Date: Sat, 19 Sep 2009 09:15:17 -0400
> From: [hidden email]
> Subject: Calculate probability of T value
> To: [hidden email]
>
> I know this is a very basic question, but I have summary statistics only (not
> the raw data) and I want to do a one sample t-test. What is the best way to
> go about this?
>
> Calculate T and then find the probability of that statistic? I know I can use
> TDIST in Excel, but what is the equvialent in SPSS? I am trying to work
> through some examples online and I am not getting the same
> results....obviously it is me and not SPSS.
>
> In short, I actually have never calculated p by hand summarized data and
> simply want to give it a shot.
>
> Any help will be greatly appreciated!
>
> Brock
>
> =====================
> To manage your subscription to SPSSX-L, send a message to
> [hidden email] (not to SPSSX-L), with no body text except the
> command. To leave the list, send the command
> SIGNOFF SPSSX-L
> For a list of commands to manage subscriptions, send the command
> INFO REFCARD

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