At the beginning of the semester we collected data from a class of DeAnza students. Two of the questions on the survey were about age and whether or not they have equal, more, or less energy in the afternoon compared to the morning. Below are the results. Age Equal Less More 0 - 25 Years Old 10 3 51 Over 25 Years Old 49 20 36 Find the expected value for the number of students who are over 25 years old and who have less energy in the afternoon compared with morning. (Round to nearest whole number.)
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.
At the beginning of the semester we collected data from a class of DeAnza students.
Two of the questions on the survey were about age and whether or not they have equal, more, or less energy in the afternoon compared to the morning. Below are the results.
| Age | Equal | Less | More |
|---|---|---|---|
| 0 - 25 Years Old | 10 | 3 | 51 |
| Over 25 Years Old | 49 | 20 | 36 |
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