An article in Quality Engineering (1992, Vol. 4, pp. 487-495) presents viscosity data from a batch chemical process. A sample of these data is in the table below. 13.3 14.3 14.9 15.2 15.8 14.2 16.0 14.0 14.5 16.1 13.7 15.2 13.7 16.9 14.9 14.4 15.3 13.1 15.2 15.9 15.1 14.9 13.6 13.7 15.3 15.5 14.5 16.5 13.4 15.2 15.3 13.8 14.3 12.6 15.3 14.8 14.1 14.4 14.3 15.6 14.8 14.6 15.6 15.1 14.8 15.2 15.6 14.5 15.2 14.3 15.8 17.0 14.3 14.6 16.1 12.8 14.5 15.4 13.3 14.9 14.3 16.4 13.9 16.1 14.6 15.2 14.1 14.8 16.4 14.2 15.2 16.6 14.1 16.8 15.4 14.0 16.9 15.7 14.4 15.6 Use the data above to calculate the descriptive statistics for two groups of observations: the first 40 observations (the first 4 columns) and the last 40. Round your answers to three decimal places (e.g. 98.765). The first 40 observations: Sample mean Sample variance X= i s² = 14.72 i 0.924
An article in Quality Engineering (1992, Vol. 4, pp. 487-495) presents viscosity data from a batch chemical process. A sample of these data is in the table below. 13.3 14.3 14.9 15.2 15.8 14.2 16.0 14.0 14.5 16.1 13.7 15.2 13.7 16.9 14.9 14.4 15.3 13.1 15.2 15.9 15.1 14.9 13.6 13.7 15.3 15.5 14.5 16.5 13.4 15.2 15.3 13.8 14.3 12.6 15.3 14.8 14.1 14.4 14.3 15.6 14.8 14.6 15.6 15.1 14.8 15.2 15.6 14.5 15.2 14.3 15.8 17.0 14.3 14.6 16.1 12.8 14.5 15.4 13.3 14.9 14.3 16.4 13.9 16.1 14.6 15.2 14.1 14.8 16.4 14.2 15.2 16.6 14.1 16.8 15.4 14.0 16.9 15.7 14.4 15.6 Use the data above to calculate the descriptive statistics for two groups of observations: the first 40 observations (the first 4 columns) and the last 40. Round your answers to three decimal places (e.g. 98.765). The first 40 observations: Sample mean Sample variance X= i s² = 14.72 i 0.924
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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Help correct three part question please thank you
Transcribed Image Text:An article in Quality Engineering (1992, Vol. 4, pp. 487-495) presents viscosity data from a batch chemical process. A sample of these
data is in the table below.
13.3 14.3 14.9 15.2 15.8 14.2 16.0 14.0
14.5 16.1 13.7 15.2 13.7 16.9 14.9 14.4
15.3 13.1 15.2 15.9 15.1 14.9 13.6 13.7
15.3 15.5 14.5 16.5 13.4 15.2 15.3 13.8.
14.3 12.6 15.3 14.8 14.1 14.4 14.3 15.6
14.8 14.6 15.6 15.1 14.8 15.2 15.6 14.5
15.2 14.3 15.8 17.0 14.3 14.6 16.1 12.8
14.5 15.4 13.3 14.9 14.3 16.4 13.9 16.1
14.6 15.2 14.1 14.8 16.4 14.2 15.2 16.6
14.1 16.8 15.4 14.0 16.9 15.7 14.4 15.6
Use the data above to calculate the descriptive statistics for two groups of observations: the first 40 observations (the first 4
columns) and the last 40.
Round your answers to three decimal places (e.g. 98.765).
The first 40 observations:
The second 40 observations:
Sample mean
Sample variance
Sample standard deviation.
First quartile
Median (second quartile)
Third quartile
Sample mean
Sample variance
Sample standard deviation
First quartile
Median (second quartile)
Third quartile
- Your answer is partially correct.
X=
²=
S=
9₁ =
92=
X =
ܐܨ
=
91 =
92=
i
93=
i 0.924
i 0.961
i 14.05
i
i
S= i
i
14.72
i
14.85
i
15.3
15.078
0.958
0.979
i 14.35
i 15.0
15.65
half of
Prepare comparative box plots for two groups of observations. Comment on the information in the box plots.
The median of the first set of observations is slightly lower than the median of the second set. The first
the data seems to be concentrated a little more tightly. More than two data point(s) appear(s) as outliers in the first half of
✓data point(s) appear(s) as outliers in the second half of the data.
the data, two
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