Negative t-Test statistic

  • Thread starter lavster
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  • #1
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I have calculated the one sided t-test statistic and am getting a negative value as the sample mean is less than the mean under H_0. there are no negative t values in the table - do i take the absolute value of this?

thanks
 

Answers and Replies

  • #2
Take the negative of the critical value in the table and reject if your t-value is less than this.

I'm presuming you're doing a one-sided test on (<). In this instance you could take the absolute value and reject when t is greater than, but you can probably see how always taking the absolute value can go wrong for a one-sided test?
 

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