Concept explainers
(a)
To find: the mean and median of the students’ heights in feet.
(a)
Answer to Problem 21E
The new mean is 5.77 feet and the new median is 5.79 feet.
Explanation of Solution
Given:
Calculation:
We know that 1 foot = 12 inches. For converting inches into feet, we divide each measure with 12. Thus the new mean and median are obtained as follows:
Conclusion:
Therefore the new mean is 5.77 feet and the new median is 5.79 feet.
(b)
To find: the standard deviation and IQR of the students’ heights in feet.
(b)
Answer to Problem 21E
The new standard deviation and new inter
Explanation of Solution
Calculation:
Divide the original deviation by 12.
Thus the new standard deviation is obtained as follows:
The first and third
Thus the new inter quartile
Conclusion:
The new standard deviation and new inter quartile range of student's height are equal to 0.27 feet.
Chapter 2 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Elementary Statistics Using Excel (6th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
Elementary Statistics
Essentials of Statistics (6th Edition)
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