This course ONLY covers the topic of how to use a software package to calculate the power of a designed study, or the sample size needed for an experiment with a specific power. It DOES NOT cover any formulas of how to calculate it. The course DOES NOT include how to analyze or interpret data. If you are looking for methods or formulas, this is not the course. Some lectures are highly repetitive for basic concepts such as correlation, however more advance concepts (such as contrasts) are not explained. This course could be a three weeks course instead of five weeks.