Re: Sig. (p value)

Posted by Art Kendall on Nov 27, 2011; 12:32pm
URL: http://spssx-discussion.165.s1.nabble.com/Sig-p-value-tp5026092p5026396.html

Click <help> <algorithms> scroll down to and click <significance of a t statistic>


Art Kendall
Social Research Consultants

On 11/27/2011 3:13 AM, Anthony James wrote:

Dear all,

In the old days for testing whether the difference between two means is significant we used to consult the t table to check if our t exceeds the critical values in the table.

But now, there is a Sig. in the output and if it’s smaller than our significance level we reject the null hypothesis.

Can somebody explain how the Sig (or p)in SPSS is computed?

Cheers

Anthony

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