Here are the errors associated with a particular forecast over the past five months, in chronological order: 5, 10, -10, 0, 10. Which of the following statements is (are) true? I. The mean error over these five months is 3. II. The forecast was too high during the third month. III. The forecast was perfectly accurate during one of the months. Oa. I only Ob.I, Il and III Oc. Il only d. II only e. I and III

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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.