Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

For heterogeneous populations, a sample size of 2K is unlike the spoonful of soup. Accordingly, results of surveys conducted with such a sample may not be valid for the population.

We provide an interactive Excel calculator to compute power, effect size or sample size when comparing study designs or genome platforms involving different numbers of hypothesis tests.

You will be asked to complete the major types of computations that you have completed on the quizzes. You will be asked to do the following: calculate confidence intervals for the mean using the t or ...

We developed a Bayesian approach to sample size calculations for cross-sectional studies designed to estimate sensitivity and specificity of one or more diagnostic tests. Sample size calculations can ...

We consider the problem of calculating power and sample size for tests based on generalized estimating equations (GEE), that arise in studies involving clustered or correlated data (e.g., longitudinal ...