Sta 381 exam 1 - Study guides, Class notes & Summaries

multiplication rule - correct answer the number of ways to complete an operation is the product of the number of ways to complete each step permutation - correct answer an ordered sequence of the elements combination - correct answer a subset of r elements that can be selected from n elements where order doesn't matter probability of an event in a...

Retrospective Study - correct answer A retrospective study gathers historical data through records. The outcomes have already occurred before the study Observational Study - correct answer A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome. Designed Experiment - correct answer I...