Comparing Two Proportions
This item is included in the following series/curriculum: Statistically Speaking
- Grade Level: Senior High (10-12)-Adult
- Subjects: Business mathematics
- Produced By: Coast Learning Systems
- Year: 2011
- Country: United States
- Language: English
- Running Time: 30m
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This lesson extends what you learned in Lesson 19 about single-sample proportions to the concept of two-sample proportions. Researchers use two-sample proportions to compare one group to another, which often involves comparing one treatment to another. In Lesson 18, you learned how to use the two-sample method with means from quantitative data. Now you will learn how to use the same method with data expressed in terms of a proportion of defined successes, including how to find confidence intervals and do tests of significance.