Comparing multiple means/medians
Compare the means/medians of many independent samples.
- Select a cell in the dataset.
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On the Analyse-it ribbon tab, in the
Statistical Analyses group, click Compare Groups, and then click the multiple comparisons procedure.
The analysis task pane opens.
- In the Y drop-down list, select the quantitative response variable.
- In the X drop-down list, select the categorical factor variable identifying the groups.
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In the Type drop-down list, select the comparisons, and then:
- If comparing with best, in the Best drop-down list, select the "best" group.
- If comparing against a control, in the Control drop-down list, select the control group.
- Optional: To sort the contrasts by the magnitude of the difference, select the Ordered check box.
- Optional: In the Method drop-down list, select the multiple comparisons procedure, and in the Confidence interval edit box, type the confidence level as a percentage, or type - to suppress the confidence interval, and then in the Confidence bounds drop-down list, select the limits.
- Optional: To perform a hypothesis test to test if the difference is equal to 0, select the Hypothesis test check box, and then to compare the p-value, in the Significance level edit box, type the predefined significance level.
- Optional: To show a mean-mean scatter plot, select the Mean-Mean scatter plot check box.
- Click Calculate.
Available in Analyse-it Editions
Standard edition
Method Validation edition
Quality Control & Improvement edition
Ultimate edition
Standard edition
Method Validation edition
Quality Control & Improvement edition
Ultimate edition