A national chain of department stores ranks its 1,250,000 salespeople by the monetary value of their sales. Goran's sales are at the 78th percentile. Lena's sales are at the 56th percentile. (a) Which of the following must be true about Goran's sales? Goran had sales lower in value than about 78% of the salespeople. The value of Goran's sales were about 78% of the chain's total. Goran had sales higher in value than about 78% of the salespeople. The value of Goran's sales were about 22% of the chain's total. (b) Which of the following must be true about Goran's and Lena's sales? Lena's sales were higher in value than Goran's sales. Both Goran and Lena had sales higher in value than the median. The value of Goran's sales were $2200 more than Lena's. The values of both Goran's and Lena's sales were in the bottom half of all of the salespeople

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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.

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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.