ents in a statistics class were surveyed about the number of hours they worked per week. The density histogram shown describes their responses. For a randomly selected student in the class, let X be the number of hours the student works per week. Describe the shape of the distribution. Choose the correct answer below. Time Spent Woring per Week 0.06 1-- 025 021 0 15 0 13 0 14 0 12 10 15 30 Oa. Left-skewed Ob. Bimodal Right-skewed O d. Normal

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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.