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.
What is 15 percent of 120
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18.
When we make percentages, we divide the given quantity into 100 parts and then each of those parts represent 1 percent of the quantity. So simply divide by 100, and then multiply by 15, to get 15%.
Tip: If you want to do it faster, just multiply by 0.15. (for eg. If you were asked to find 21% just do 120 x 0.21 = 25.2)
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