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The standard deviation of the sample values in Exercise is

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 4CQQ Chapter 3.4

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 4CQQ

The standard deviation of the sample values in Exercise 1 is 5.0 min. What is the variance (including units)?

Step-by-Step Solution:

Answer:

Step 1 of 1

SL. No

x

(x -

1

1550

92.16

2

1642

6789.76

3

1538

466.56

4

1497

3918.76

5

1571

129.96

Sum

7798

11397.2

Average

1559.6

A statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.

The standard deviation of a sample is known as S and is calculated using:

 s   =  53.3788

Variance = (53.3788)2

                    = 2849.2962

Step 2 of 1

Chapter 3.4, Problem 4CQQ is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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The standard deviation of the sample values in Exercise is