The following contingency table gives the results of a sample survey of South African male and female respondents with regard to their preferred fast food outlet: Preferred Fast Food Outlet KFC Burger King McDonald’s Total No. Of Males 50 60 20 130 No. Of Females 100 50 120 270 Total 150 110 140 400 Q.1.4 What is the probability of selecting a respondent who is male or who prefers McDonald’s? (5) Q.1.5 What is the probability of selecting a respondent who does not prefer McDonald’s
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.
The following
female respondents with regard to their preferred fast food outlet:
Preferred Fast Food Outlet
KFC Burger King McDonald’s Total
No. Of Males 50 60 20 130
No. Of Females 100 50 120 270
Total 150 110 140 400
Q.1.4 What is the
McDonald’s?
(5)
Q.1.5 What is the probability of selecting a respondent who does not prefer McDonald’s? (4)
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