Firm Number of cars Mean no. of Standard deviation breakdown A 35 3.46 0.842 37 3.64 0.955
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.
Two car hire firms A and B have the following records of number of cars together with records of breakdown per car for the year 2015.
The A firm claims that from the figures, its cars are more reliable. Test this claim at 5% level of
significance.
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