Testing equality of proportions (independent samples)

Test if there is a difference between the proportions of two or more independent samples.

  1. Select a cell in the dataset.
  2. On the Analyse-it ribbon tab, in the Statistical Analyses group, click Compare Groups, and then click the hypothesis test.
    The analysis task pane opens.
  3. In the Y drop-down list, select the categorical response variable.
  4. In the X drop-down list, select the categorical factor variable that identifies the groups.
  5. If the data are in frequency form, in the Frequency drop-down list, select the frequency count variable.
  6. In the Hypotheses drop-down list, select the null and alternative hypothesis.
  7. Optional: To compare the p-value against a predefined significance level, in the Significance level edit box, type the maximum probability of rejecting the null hypothesis when in fact it is true (typically 5% or 1%).
  8. Click Calculate.