Patient 3 4 Before Drug 168 167 174 170 171 170 180 182 After Drug 171 173 178 172
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.
A physician wants to copmaure the blood pressures of six patients before and after treatment with a drug. The blood pressures are as follows:
The physician wants to test if there is a significant change of the clood pressure before and after the drug at 0.05 level of significance. the absolute value of the test statistic and the absolute value of the test are, respectively:
A. 0.7192 and 1.812
B. 0.7192 and 2.228
C. 1.6151 and 2.015
D. 1.6151 and 2.571
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