22. Ten students in a jazz history class were given a pre-test and a post-test to see how muc they learned in the class. Pre-test 8 13 22 25 29 31 35 38 42 52 Post-test 31 37 45 28 50 37 49 25 36 69 Can we say that the post-test scores are significantly higher than the pre-test scores?

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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.