Estimating the difference between means/medians (2 related samples)

Estimate the difference between the means/medians of 2 related samples.

1. Select a cell in the dataset.
2. On the Analyse-it ribbon tab, in the Statistical Analyses group, click Compare Pairs, and then click the effect size estimator.
   The analysis task pane opens.
3. If the data consists of paired/repeated measurements in separate variables:
   1. In the Model drop-down menu, select Paired/Repeated.
   2. In the Y list, select the quantitative variables.
4. If the data consist of matched pairs with a separate response variable, factor variable, and blocking variable:
   1. In the Model drop-down menu, select Matched.
   2. In the Y drop-down list, select the quantitative response variable.
   3. In the X (factor) drop-down list, select the categorical factor variable identifying the groups.
   4. In the Block drop-down list, select the blocking variable identifying the matching.
5. In the Difference drop-down list, select the direction of the difference.
6. In the Confidence interval edit box, type the confidence level as a percentage, or type - to suppress the confidence interval, and then in the drop-down list, select the confidence bounds.
7. In the Method drop-down list, select the interval estimator.
8. Click Calculate.