Concept explainers
(a)
To find: the mean, median, standard deviation, and IQR for the transformed data.
(a)
Answer to Problem 4CRE
The new mean would be
The median would be
The standard deviation would be
The lQR would be
Explanation of Solution
Given:
Calculation:
If we converted the guesses from feet to meters the shape of the distribution would notchange. Since 3.28 feet
The new mean would be
The median would be
The standard deviation would be
The lQR would be
Conclusion:
The new mean would be
The median would be
The standard deviation would be
The lQR would be
(b)
To find: mean and standard deviation of the errors.
(b)
Answer to Problem 4CRE
The standard deviation of the error s 12.5 feet and the mean 1.1 feet
Explanation of Solution
Calculation:
The mean error would be
Conclusion:
Therefore, thestandard deviation of the error s 12.5 feet and the mean 1.1 feet
Chapter 2 Solutions
The Practice of Statistics for AP - 4th Edition
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Elementary Statistics: Picturing the World (7th Edition)
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