In a college,there are 20 major subjects and 40 minor subjects,these are divided into 20 groups of 2 students each , such that all the ways of dividing them into group are equally likely . A = no of groups having 1 major subject and 1 minor subject Find the variance var (A) of A
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.
In a college,there are 20 major subjects and 40 minor subjects,these are divided into 20 groups of 2 students each , such that all the ways of dividing them into group are equally likely .
A = no of groups having 1 major subject and 1 minor subject
Find the variance var (A) of A
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