x 30 40 | 50 | 60 50 60 y
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.
On a trip of d miles to another city, a truck driver’s average speed was x miles per hour. On the return trip, the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. (a) Verify that y = 25x/(x − 25). What is the domain? (b) Complete the table. Are the values of y different than you expected? Explain. (c) Find the limit of y as x approaches 25 from the right and interpret its meaning.
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