Standard deviation = (F

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f
represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained
from the original list of data values, 11.1.
S=
[Σ(f•x2)]-[Σ(f•x)]
n(n-1)
n
Interval
Frequency
Standard deviation =
30-36
2
37-43
3
(Round to one decimal place as needed.)
44-50
5
51-57
1
58-64
18
65-71
34
72-78
39
Transcribed Image Text:Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. S= [Σ(f•x2)]-[Σ(f•x)] n(n-1) n Interval Frequency Standard deviation = 30-36 2 37-43 3 (Round to one decimal place as needed.) 44-50 5 51-57 1 58-64 18 65-71 34 72-78 39
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