(a)
To explain: the shape of the distribution
(a)
Answer to Problem 99E
The shape of the distribution is right-skewed
Explanation of Solution
Given:
In the output we note that the
If the mean is a lot larger than the median, this indicates that the distribution is right-skewed (because the mean is influenced by large outliers, while the median remains unaffected).
(b)
To interpret: the value of the standard deviation.
(b)
Answer to Problem 99E
The value of the standard deviation is $21.6974.
Explanation of Solution
Calculation:
The value of the standard deviation (StdDev) is given in the output as:
This means that the distance between a typical amount spent by a shopper and the mean amount is $21.6974.
Conclusion:
Therefore, the value of the standard deviation is $21.6974.
(c)
To find: whether there is any outlier
(c)
Answer to Problem 99E
There might be more outliers
Explanation of Solution
Calculation:
Given in the output:
The
Outliers are observations that are more than 1.5 times the IQR above Q3 or below Ql.
We then note that the maximum of 93.34 is greater than 84.595 and thus the maximum is an outlier (there might be more outliers).
Conclusion:
Therefore, there might be more outliers
Chapter 1 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Statistics for Psychology
Fundamentals of Statistics (5th Edition)
Statistics for Business and Economics (13th Edition)
STATS:DATA+MODELS-W/DVD
Essentials of Statistics (6th Edition)
Elementary Statistics Using Excel (6th 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