10 a car service centre studies that the record that shows the number of cars served per day they use the date to calculate the relative frequency and obtain the following probability distribution Number of cars x 1 , 2,3,4,5,6, P (x=x) 0.1, 0.1, 0.2, 0.3,0.2 ,0.1 a) find the probability that two or less cars are serviced each day. b) find the cumulative distribution function of the number of cars serviced per day C) find E (x) and v ar (x)

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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.