The article "Oxidation State and Activities of Chromium Oxides in Cao-SiO,-CrO, Slag System" (Y. Xiao, L. Holappa, and M. Reuter, Metallurgical and Materials Transactions B, 2002:595-603) presents the amount x (in mole percent) and activity coefficient y of CrO,5 for several specimens. The data, extracted from a larger table, are presented in the following table. х У 2.6 10.20 5.03 19.9 8.84 0.8 6.62 5.3 2.89 20.3 2.31 39.4 7.13 5.8 3.40 29.4 5.57 2.2 7.23 5.5 2.12 33.1 1.67 44.2 5.33 13.1 16.70 0.6 9.75 2.2 2.74 16.9 2.58 35.5 1.50 48.0 Compute the least-squares line for predicting y from x. b. Plot the residuals versus the fitted values. Compute the least-squares line for predicting y from 1/x. d. Plot the residuals versus the fitted values. C. Using the better fitting line, find a 95% confidence interval for the mean value of y when x= 5.0.
The article "Oxidation State and Activities of Chromium Oxides in Cao-SiO,-CrO, Slag System" (Y. Xiao, L. Holappa, and M. Reuter, Metallurgical and Materials Transactions B, 2002:595-603) presents the amount x (in mole percent) and activity coefficient y of CrO,5 for several specimens. The data, extracted from a larger table, are presented in the following table. х У 2.6 10.20 5.03 19.9 8.84 0.8 6.62 5.3 2.89 20.3 2.31 39.4 7.13 5.8 3.40 29.4 5.57 2.2 7.23 5.5 2.12 33.1 1.67 44.2 5.33 13.1 16.70 0.6 9.75 2.2 2.74 16.9 2.58 35.5 1.50 48.0 Compute the least-squares line for predicting y from x. b. Plot the residuals versus the fitted values. Compute the least-squares line for predicting y from 1/x. d. Plot the residuals versus the fitted values. C. Using the better fitting line, find a 95% confidence interval for the mean value of y when x= 5.0.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Related questions
Question

Transcribed Image Text:The article "Oxidation State and Activities of Chromium Oxides in Cao-SiO,-CrO, Slag
System" (Y. Xiao, L. Holappa, and M. Reuter, Metallurgical and Materials Transactions B,
2002:595-603) presents the amount x (in mole percent) and activity coefficient y of CrO,5
for several specimens. The data, extracted from a larger table, are presented in the following
table.
х
У
2.6
10.20
5.03
19.9
8.84
0.8
6.62
5.3
2.89
20.3
2.31
39.4
7.13
5.8
3.40
29.4
5.57
2.2
7.23
5.5
2.12
33.1
1.67
44.2
5.33
13.1
16.70
0.6
9.75
2.2
2.74
16.9
2.58
35.5
1.50
48.0
Compute the least-squares line for predicting y from x.
b. Plot the residuals versus the fitted values.
Compute the least-squares line for predicting y from 1/x.
d. Plot the residuals versus the fitted values.
C.
Using the better fitting line, find a 95% confidence interval for the mean value of y
when x= 5.0.
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