Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)

11th Edition

ISBN: 9780134756967

Author: Hal Saunders, Robert Carman

Publisher: PEARSON

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Textbook Question

Chapter 12.3, Problem 2CE

For each set of data, (a) calculate the standard deviation, (b) state the interval that, if normally distributed, should contain approximately 68% of the data, and (c) calculate the percent of values that actually fall within this interval.

7.48, 7.52, 7.49, 7.51, 7.47, 7.50, 7.49, 7.48, 7.46, 7.49, 7.48, 7.51, 7.47, 7.49

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 12.3, Problem 1CE

Chapter 12.3, Problem 1DE

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Chapter 12 Solutions

Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)

Ch. 12.1 - Solve: 0.82=x100 Ch. 12.1 - Prob. 2LC Ch. 12.1 - Automotive Trades The following bar graph shows...Ch. 12.1 - Trades Management The following graph shows the...Ch. 12.1 - General Interest The following double bar graph...Ch. 12.1 - General Interest The following stacked bar graph...Ch. 12.1 - Allied Health When Dr. Friedrich began working at...Ch. 12.1 - Automotive Trades The following line graph shows...Ch. 12.1 - Construction The following double-line graph...Ch. 12.1 - General Interest Study the circle graph at the top...

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Solution Summary: The standard deviation for the set of data is 0.0170.

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Chapter 12 Solutions