other. In a given population, 1000 people (aged at least 21 years old) are sampled and asked two questions: "Do you consider yourself as happy?" and “Are you involved in a relationship?" The answers are summarized in the following table. Would you reject independence of being happy and being in a relationship, with asymptotic level 5%? Compute Happy | Not happy In a relationship Not in a relationship 205 301 179 315 the p-value of the test.

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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.