Lesson 10 Objectives
Upon completion of this lesson, you should be able to:
- Describe the rationale for sample size calculations
- Describe the relationships between sample size, power, variability, effect size, and significance level
- Distinguish between type I & II error
- Calculate the sample size needed for the following scenarios given the necessary preliminary data
- Single proportion
- Comparison of two proportions
- Unmatched case-control study
- Matched case-control study
- Single mean
- Comparison of two means