Stefán is investigating whether there is a connection between having a certain eye disease and high blood pressure. He measured the blood pressure in 30 patients with the eye disease and 50 individuals without the disease and classified the people either to have or have not high blood The results are shown pressure. below: With high blood pressure Without high blood pressure With eye disease Without eye disease 19 11 22 28 What is the odds ratio for having the eye disease in people having high blood pressure against people without high blood pressure? 1. 0.003 2. 0.339 3. 2.198 4. 1.947

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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.