Concept explainers
(a)
To make:graphical display to compare calculus and statistics
(a)
Answer to Problem 65E
CALCULUS AB
STATISTICS
Explanation of Solution
Given:
Calculation:
The percent is the count in the given table divided by the row total (number of exams).
5 | 4 | 3 | 2 | 1 | |
Calculus AB | 0.2295 | 0.1871 | 0.1787 | 0.1554 | 0.2493 |
Statistics | 0.1228 | 0.2229 | 0.2419 | 0.1907 | 0.2217 |
You should use a bar graph, because the Grade is categorical (histogram requires that the variable is numerical).
The width of the bars has to be equal and the height has to be equal to the percent of exams.
CALCULUS AB
STATISTICS
The comparison of the two graphs occurs in the next part of the question.
Conclusion:
(b)
To write: few sentences comparing the two distributions of exam grades.
(b)
Answer to Problem 65E
Calculus AB students is two-peaked.
Statistics students is one-peaked.
Explanation of Solution
The number of students who took Calculus AB is a lot more than the number ofStudents who took Statistics.
Most students who take Statistics have 3, while most students who takeCalculus AB have grade 1 or 5.
The distribution of Calculus AB students is two-peaked, while the distribution ofStatistics students is one-peaked and roughly bell-shaped.
Chapter 1 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Elementary Statistics: Picturing the World (6th Edition)
Introductory Statistics (10th Edition)
Introductory Statistics
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