Paired Test Table

Figure 1. Paired-samples t table
Paired-samples t table
  • The Mean column in the paired-samples t test table displays the average difference between triglyceride and weight measurements before the diet and six months into the diet.
  • The Std. Deviation column displays the standard deviation of the average difference score.
  • The Std. Error Mean column provides an index of the variability one can expect in repeated random samples of 16 patients similar to the ones in this study.
  • The 95% Confidence Interval of the Difference provides an estimate of the boundaries between which the true mean difference lies in 95% of all possible random samples of 16 patients similar to the ones participating in this study.
  • The t statistic is obtained by dividing the mean difference by its standard error.
  • The Sig. (2-tailed) column displays the probability of obtaining a t statistic whose absolute value is equal to or greater than the obtained t statistic.

Since the significance value for change in weight is less than 0.05, you can conclude that the average loss of 8.06 pounds per patient is not due to chance variation, and can be attributed to the diet. However, the significance value greater than 0.10 for change in triglyceride level shows the diet did not significantly reduce their triglyceride levels.

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