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Statistics: Informed Decisions Using Data | 4th Edition | ISBN: 9780321757272 | Authors: Michael Sullivan, III
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Price of Chevy Cobalts The following data represent the

Chapter 3, Problem 2RE

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QUESTION:

The following data represent the sales price in dollars for nine 2-year-old Chevrolet Cobalts in the Los Angeles area.

14050

13999

12999

10995

9980

8998

7889

7200

5500

Source: cars.com

(a) Determine the sample mean and median price.

(b) Determine the range, sample standard deviation, and interquartile range.

(c) Redo (a) and (b) if the data value 14,050 was incorrectly entered as 41,050. How does this change affect the mean? The median? the range? the standard deviation? the interquartile range? Which of these values is resistant?

Questions & Answers

QUESTION:

The following data represent the sales price in dollars for nine 2-year-old Chevrolet Cobalts in the Los Angeles area.

14050

13999

12999

10995

9980

8998

7889

7200

5500

Source: cars.com

(a) Determine the sample mean and median price.

(b) Determine the range, sample standard deviation, and interquartile range.

(c) Redo (a) and (b) if the data value 14,050 was incorrectly entered as 41,050. How does this change affect the mean? The median? the range? the standard deviation? the interquartile range? Which of these values is resistant?

ANSWER:

Step 1 of 6

X

5500

-4678.89

21892012

7200

-2978.89

8873786

7889

-2289.89

5243596

8998

-1180.89

1394501

9980

-198.89

39557.23

10995

816.11

666035.5

12999

2820.11

7953020

13999

3820.11

14593240

14050

3871.11

14985493

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