handbag contains seven conins and three keys. two items are taken out of the handbag one after the other and not replaced. find the expected number of keys
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.
a handbag contains seven conins and three keys. two items are taken out of the handbag one after the other and not replaced. find the expected number of keys taken out of the handbag
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