Matlab, Fourth Edition: A Practical Introduction to Programming and Problem Solving
4th Edition
ISBN: 9780128045251
Author: Stormy Attaway Ph.D. Boston University
Publisher: Elsevier Science
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Chapter 4, Problem 7E
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Dak is investigating how long their phone's battery lasts (in hours) for various brightness levels (on a scale
of 0-100).
A part of the regression analysis done on Ti Calculator and in Excel for their data are displayed below.
Ti Calculator
Click this button to reveal the Ti Calculator Output. Click again to collapse it.
Ti Calculator
y = ax+b
B0 and p 0
t = -3.02431335
p = 0.0233
df - 6
a =-0.0380555845
b=5.88809202
s = 0.436054238
20.603868129
r = -0.777089524
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SUMMARY OUTPUT
Multiple R
0.777089524
R Square
0.603868129
Adjusted R Square
0.537846150
Standard Error
0.436054238
Observations
8
ANOVA
df
SS
MS
F
Significance F
Regression
1
1.73914021
Residual
6
1.14085979
1.73914021
0.190143298
9.1465
0.0233
Total
7
2.88000000
Coefficients
Standard Error
Intercept
Brightness
5.88809202
-0.0380555845
t Stat
7.62593816
-3.02431335
P-value
0.0003
0.0233
Use…
ce Problems
x
+
canvas.pdx.edu/courses/106252/assignments/1102408?module_item_id=4856656
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THIS IS THE second question of exdin where you have to Snow compere work to get run points.
If you use TI calculator functions, you may write your work along with functions and values you
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and answers on a paper or type on an empty Word document or Excel file. If you use Ti calculator app
on your computer or phone, you may provide screen shots of those on a word document or Excel file.
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middle steps…
Suppose the model for certain data is a parabola y
=
Bo+B1x+B2x² with observations
(1, 2.2), (2, 6.9), (3, 16.1), (4, 28.7), (5, 46.1). Describe the design matrix, the observation
vector, and the parameter vector. Using these write down the system of equations to
be approximated Xẞ = y, the parts of the normal equations XTX and XTy and write
down the normal equations. Solve and determine the residual vector €.
You may use a calculator for the computations but show the steps as described above.
Chapter 4 Solutions
Matlab, Fourth Edition: A Practical Introduction to Programming and Problem Solving
Chapter 4, Problem 4.1PChapter 4, Problem 4.2PChapter 4, Problem 4.3PChapter 4, Problem 4.4PChapter 4, Problem 4.5PChapter 4, Problem 1EChapter 4, Problem 2EChapter 4, Problem 3EChapter 4, Problem 4EChapter 4, Problem 5E
Chapter 4, Problem 6EChapter 4, Problem 7EChapter 4, Problem 8EChapter 4, Problem 9EChapter 4, Problem 10EChapter 4, Problem 11EChapter 4, Problem 12EChapter 4, Problem 13EChapter 4, Problem 14EChapter 4, Problem 15EChapter 4, Problem 16EChapter 4, Problem 17EChapter 4, Problem 18EChapter 4, Problem 19EChapter 4, Problem 20EChapter 4, Problem 21EChapter 4, Problem 22EChapter 4, Problem 23EChapter 4, Problem 24EChapter 4, Problem 25EChapter 4, Problem 26EChapter 4, Problem 27EChapter 4, Problem 28EChapter 4, Problem 29EChapter 4, Problem 30E
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