2 3 7 7 80 ... O Find the mean and standard deviation of the ungrouped sample data. (Type an integer or a decimal.) (Type an integer or decimal rounded to three decimal places as needed.) What proportion of the measurements lies within 1 standard deviation of the mean? Within 2 standard deviations? thin 3 standard deviations? % of the data values fall within 1 standard deviation of the mean. % of the data values fall within 2 standard deviations of the mean. % of the data values fall within 3 standard deviations of the mean. Based on your answers to part (B), would you conjecture that the histogram is approximately bell shaped? Explain A. Yes, because most of the data values fall near the mean with fewer data values farther from the mean. B. No, because most of the data values fall farther than 3 standard deviations from the mean. C. No, because most of the data values fall between 2 and 3 standard deviations from the mean. D. Yes, because about the same number of data values fall near the mean as fall farther above and below the mean.
2 3 7 7 80 ... O Find the mean and standard deviation of the ungrouped sample data. (Type an integer or a decimal.) (Type an integer or decimal rounded to three decimal places as needed.) What proportion of the measurements lies within 1 standard deviation of the mean? Within 2 standard deviations? thin 3 standard deviations? % of the data values fall within 1 standard deviation of the mean. % of the data values fall within 2 standard deviations of the mean. % of the data values fall within 3 standard deviations of the mean. Based on your answers to part (B), would you conjecture that the histogram is approximately bell shaped? Explain A. Yes, because most of the data values fall near the mean with fewer data values farther from the mean. B. No, because most of the data values fall farther than 3 standard deviations from the mean. C. No, because most of the data values fall between 2 and 3 standard deviations from the mean. D. Yes, because about the same number of data values fall near the mean as fall farther above and below the mean.
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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Transcribed Image Text:Consider the following set of ungrouped sample data. Answer parts A through D.
5 5 5 4 0 2 3 7 7 80
...
(A) Find the mean and standard deviation of the ungrouped sample data.
x= (Type an integer or a decimal.)
S=
(Type an integer or decimal rounded to three decimal places as needed.)
(B) What proportion of the measurements lies within 1 standard deviation of the mean? Within 2 standard deviations
Within 3 standard deviations?
% of the data values fall within 1 standard deviation of the mean.
% of the data values fall within 2 standard deviations of the mean.
% of the data values fall within 3 standard deviations of the mean.
(C) Based on your answers to part (B), would you conjecture that the histogram is approximately bell shaped? Explair
OA. Yes, because most of the data values fall near the mean with fewer data values farther from the mean.
B. No, because most of the data values fall farther than 3 standard deviations from the mean.
C. No, because most of the data values fall between 2 and 3 standard deviations from the mean.
D. Yes, because about the same number of data values fall near the mean as fall farther above and below the
mean.
Transcribed Image Text:(C) Based on your answers to part (B), would you conjecture that the histogram is approximately bell shaped? Explain.
A. Yes, because most of the data values fall near the mean with fewer data values farther from the mean.
B. No, because most of the data values fall farther than 3 standard deviations from the mean.
C. No, because most of the data values fall between 2 and 3 standard deviations from the mean.
D. Yes, because about the same number of data values fall near the mean as fall farther above and below the
mean.
(D) To confirm your conjecture, construct a histogram with the class interval width 1 starting at 0.5.
Which histogram below shows the data?
O A.
O B.
Frequency
H
1
2 4 6 8
Data Value
Q
Frequency
10-
8-
6420
H
2
4 6 8
Data Value
o
2
O C.
Frequency
d
-2 0 2 4 6 8 10 12
Data Value
Frequency
D.
4-
0
2
4
Data Value
-6
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