Concept explainers
(a)
To find:
The standard deviation of the scores of golfer A.
(a)
Answer to Problem 23E
Explanation of Solution
Given:
The table
Concept used:
The mean of the squared deviation or variance
The square root of the variance
Calculation:
The mean is
The mean of the squared deviation or variance
The square root of the variance
The score of golfer A differs from the mean by about
(b)
To find:
The standard deviation of the scores of golfer B.
(b)
Answer to Problem 23E
Explanation of Solution
Given:
The table
Concept used:
The mean of the squared deviation or variance
The square root of the variance
Calculation:
The mean is
The mean of the squared deviation or variance
The square root of the variance
The score of golfer B differs from the mean by about
(c)
To explain:
The standard deviation for golfer A and golferB.
(c)
Answer to Problem 23E
The scores of golfer A are more spread out than the scores of golfer B
Explanation of Solution
Given:
The table
Concept used:
The mean of the squared deviation or variance
The square root of the variance
Calculation:
The mean is
The mean of the squared deviation or variance
The square root of the variance
The mean is
The mean of the squared deviation or variance
The square root of the variance
The scores of golfer A are more spread out than the scores of golfer B
Chapter 7 Solutions
BIG IDEAS MATH Integrated Math 1: Student Edition 2016
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