The ctually had the disease Yes No 143 6 ve 15 136
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.
Conditional probability is a measure of probability. It indicates probability of occurring an event given that another event has occurred.
Let, A be the event that he or she did not have the disease.
B be the event that test is positive.
According to conditional probability -
= [ P() indicates probability of occurring event B given that event A has occurred.]
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