Creating a Tukey mean-difference plot

Summarize the differences between two related observations.

  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 Difference.
    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. Optional: To show a histogram of the distribution of the differences, select the Histogram check box.
  6. Optional: To show a normality plot of the differences, select the Normal plot check box.
  7. Click Calculate.
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