Required input  

  The variable of interest. You can use the 

 button to select variables and selection criteria.  

  The test value you want to compare the sample data with.  

Options  

  Logarithmic transformation: select this option if the data are positively skewed. 

Results 

The results window first displays the summary statistics of the observations.  

The One sample t test panel shows:  

  The test value  

  The difference Sample mean   Test value  

  The 95% Confidence Interval (CI) for this difference  

  The Degrees of Freedom (DF), t statistic, and corresponding (two sided) P value. 

If the calculated P value is less than 0.05, the conclusion is that, statistically, the sample mean is 

significantly different from the test value.  

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