Explanation Given: The values are amperages measured for a collection of wires varying in size from 0000 AWG (American Wire Gauge) gauge to 6 AWG gauge is mentioned as, 383, 168, 389, 179, 217, 309, 186, 340, 221, 156, 398, 254, 106, 282, 290, 111, 143, 367, 264, 275, 345, 128, 173, 161, 326, 190, 379, 267, 209 and 124. Procedure used: Steps for constructing the frequency distribution: 1. Defined the classes using the class width. 2. For each of the class place the tally marks, if the data value is in the class interval. 3. Count the number of tally marks for each class interval for obtaining frequency. Mean for grouped data: M e a n ( x ¯ ) = Sum of ' product , F M ' n In the formula, F denotes the frequency, M denotes the midpoint and n is the number of values in the set. Standard deviation for grouped data: Standard deviation ( s ) = sum of F ( M − x ¯ ) 2 n − 1 In the formula, F denotes the frequency, M denotes the midpoint, x ¯ denotes the mean, ( M − x ¯ ) denotes the deviation from the mean and n is the number of values in the set. Calculation: The width of the class interval is 60 AWG. The first class is 100–159 AWG. Similarly all the class intervals are defined with the width of 60 AWG. Place the tally marks for each of the data value within the interval. Count all the tally marks for frequency of each class. The frequency distribution is, Class Tally Frequency, F 100–159 | | | | | 6 160–219 | | | | | | | 8 220–279 | | | | 5 280–339 | | | | 4 340–399 | | | | | | 7 The midpoint is calculated by taking the average of the upper endpoint and lower end point of the class

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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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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