Concept explainers
a.
To construct: The histogram using the provided data of travel time.
a.
Explanation of Solution
Given:
The data set is:
17.6 | 23.6 |
17.7 | 17.7 |
24.2 | 25 |
24.6 | 20.7 |
29.1 | 26.8 |
20.9 | 23.9 |
30.9 | 24.1 |
23.4 | 23.6 |
15.5 | 25.9 |
22.1 | 27.3 |
20 | 25.5 |
21.8 | 20.1 |
25 | 27.9 |
22.3 | 22.3 |
22.9 | 18.2 |
15.9 | 18.5 |
23.5 | 22.4 |
24.6 | 25.1 |
20.8 | 22.3 |
21.2 | 30.6 |
26.9 | 26.6 |
25.2 | 23.4 |
25.6 | 22 |
20.8 | 24 |
17.9 | 22.9 |
29.2 |
Calculation:
To construct the histogram, frequency distribution is required and it could be constructed as:
Graph:
The histogram could be constructed as:
b.
To describe: The shape of the provided distribution. Also, find the common interval of travel times.
b.
Explanation of Solution
From the above histogram, it can be concluded that the distribution of DRP scores is approximately normal that tells that the sample population data is also normally distributed.
It could be seen from the frequency distribution constructed in above part; the frequency is the highest for the interval 22-24. Thus, it could be said that 22-24 is the common interval of travel times.
Chapter 1 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Elementary Statistics
Introductory Statistics
Elementary Statistics: Picturing the World (7th Edition)
College Algebra (7th Edition)
A First Course in Probability (10th Edition)
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman