Assume that 155 students are surveyed and every student takes at least one of the following languages. The results of the survey are as follows:87 take French.89 take German.43 take French and German.38 take German and Russian.20 take French as their only foreign language.17 take French, Russian, and German. (1) How many take Russian? (2) How many take French and Russian but not German?
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.
Assume that 155 students are surveyed and every student takes at least one of the following languages. The results of the survey are as follows:
87 take French.
89 take German.
43 take French and German.
38 take German and Russian.
20 take French as their only foreign language.
17 take French, Russian, and German.
(1) How many take Russian?
(2) How many take French and Russian but not German?
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