A mayor of Richmond's city needs to decide how to allocate improvement funds to the three main cities Street. They decide that if there is no real difference in the average number of accidents on the Street, then each Street should receive one third of the total funds. The council then records the number of accidents occurring for each Street for five weeks. Their findings are:

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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.