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MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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.
[E(f•x)]-[Z•x]*
n(n - 1)
Interval
30-39
40-49
50-59
Frequency
2
60-69
70-79
4
1
80-89
90-99
4
13
33
37
Standard deviation=
(Round to one decimal place as needed.)
%3D
Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation, 11.1?
O A. The computed value is significantly greater than the given value.
OB. The computed value is not significantly different from the given value.
O C. The computed value is significantly less than the given value.
Click to select your answer(s).
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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.
[E(f•x)]-[Z•x]*
n(n - 1)
Interval
30-39
40-49
50-59
Frequency
2
60-69
70-79
4
1
80-89
90-99
4
13
33
37
Standard deviation=
(Round to one decimal place as needed.)
%3D
Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation, 11.1?
O A. The computed value is significantly greater than the given value.
OB. The computed value is not significantly different from the given value.
O C. The computed value is significantly less than the given value.
Click to select your answer(s).
StatCrunch
Next
Show all
IMG-8095jpg
9:57 AM
7/24/2021
Chp
pg dr
home
end
dn 6d
ins
prt sc
delete
12
f1o
f8
f9
f6
f7 -
f5
米
4 IOI
unu
lock
esc
backspace
%3D
&
7
#
3
@
6.
4
1
{
home
T
Y
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E
tab
enter
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K
F
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pause
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1 shift
caps lock
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