Obtaining GPA for any given student is possible, but labor intensive, what is the best study population sampling method, and what bias (if any) is present in that method? Group of answer choices Random sample – they have access to all the data, however, students from some years might perform better than students from other years, thus there would be selection bias Random sample – since they have access to the entire population, this would be an unbiased sample Stratified, Random sample – since they have access to the entire population, this would be an unbiased sample if an equal sized random sample is drawn from each year.

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.