A sample of 77 individuals working at a particular office was selected and the noise level (dBA) experienced by each individual was determined, yielding the following data ("Acceptable Noise Levels for Construction Site Offices," Building Serv. Engr. Research and Technology. 2009: 87-94). 55.3 55.3 55.3 55.9 55.9 55.9 55.9 56.1 56.1 56.1 56.1 56.1 56.1 56.8 56.8 57.0 57.0 57.0 57.8 57.8 57.8 57.9 57.9 57.9 58.8 58.8 58.8 59.8 59.8 59.8 62.2 62.2 63.8 63.8-63.8 63.9 63.9 63.9 64.7 64.7 64.7 65.1 65.1 65.1 65.3 65.3 65.3 65.3 67.4 67.4 67.4 67.4 68.7 68.7 68.7 68.7 69.0 70.4 70.4 71.2 71.2 71.2 73,0 73.0 73.1 73.1 74.6 74.6 74.6 74.6 79.3 79.3 79.3 79.3 83.0 83.0 83.0 (a) Create a frequency distribution table. The table should have the following columns: class, frequency and relative frequency. (b) Draw the Histogram of frequencies. (c) Calculate the mean and standard deviation of the sample using the formulas of grouped data. Expand the above table, add more columns needed for the calculations. Show all calculations. Do not skip any step
A sample of 77 individuals working at a particular office was selected and the noise level (dBA) experienced by each individual was determined, yielding the following data ("Acceptable Noise Levels for Construction Site Offices," Building Serv. Engr. Research and Technology. 2009: 87-94). 55.3 55.3 55.3 55.9 55.9 55.9 55.9 56.1 56.1 56.1 56.1 56.1 56.1 56.8 56.8 57.0 57.0 57.0 57.8 57.8 57.8 57.9 57.9 57.9 58.8 58.8 58.8 59.8 59.8 59.8 62.2 62.2 63.8 63.8-63.8 63.9 63.9 63.9 64.7 64.7 64.7 65.1 65.1 65.1 65.3 65.3 65.3 65.3 67.4 67.4 67.4 67.4 68.7 68.7 68.7 68.7 69.0 70.4 70.4 71.2 71.2 71.2 73,0 73.0 73.1 73.1 74.6 74.6 74.6 74.6 79.3 79.3 79.3 79.3 83.0 83.0 83.0 (a) Create a frequency distribution table. The table should have the following columns: class, frequency and relative frequency. (b) Draw the Histogram of frequencies. (c) Calculate the mean and standard deviation of the sample using the formulas of grouped data. Expand the above table, add more columns needed for the calculations. Show all calculations. Do not skip any step
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text:A sample of 77 individuals working at a particular office
was selected and the noise level (dBA) experienced by each
individual was determined, yielding the following data
("Acceptable Noise Levels for Construction Site Offices,"
Building Serv. Engr. Research and Technology. 2009:
87-94).
55.3 55.3 55.3 55.9 55.9 55.9 55.9 56.1 56.1 56.1 56.1
56.1 56.1 56.8 56.8 57.0 57.0 57.0 57.8 57.8 57.8 57.9
57.9 57.9 58.8 58.8 58.8 59.8 59.8 59.8 62.2 62.2 63.8
63.8-63.8 63.9 63.9 63.9 64.7 64.7 64.7 65.1 65.1 65.1
65.3 65.3 65.3 65.3 67.4 67.4 67.4 67.4 68.7 68.7 68.7
68.7 69.0 70.4 70.4 71.2 71.2 71.2 73,0 73.0 73.1 73.1
74.6 74.6 74.6 74.6 79.3 79.3 79.3 79.3 83.0 83.0 83.0
(a) Create a frequency distribution table. The table should have the following columns: class,
frequency and relative frequency.
(b) Draw the Histogram of frequencies.
(c) Calculate the mean and standard deviation of the sample using the formulas of grouped data.
Expand the above table, add more columns needed for the calculations. Show all calculations. Do
not skip any step.
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