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How To... > Work with Statistical Objects > Estimate Parameters and Compute Confidence Intervals > Estimate the Population Proportion from Raw Data
If you have a collection of cases that have a categorical attribute and you want to estimate a proportion and confidence interval for a categorical value of that attribute, estimate proportion is for you. Say, for example, you’ve sampled voters in your neighborhood by asking them three questions about an upcoming election. For each question, you want an estimate of the population proportion that answered “yes.”
| 1. | Create an estimate by dragging one from the or by choosing . |
| 2. | From the pop-up menu in the estimate’s upper-right corner, choose. |
| 3. | Drop the attribute of interest into the prompt in the top section of the estimate, where it says Attribute (categorical): <unassigned>. |
You can change the category whose proportion is being estimated by clicking on the category name and choosing from the resulting pop-up menu.
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