. sum Variable | Obs Mean Std. Dev. Min Маx grade | hours | 10 75 12.46328 56 94 10 20 8 8 32 reg grade hours Source | df MS Number of obs 10 F(1, 8) 40.49 Model | Residual | 1167.36111 1 1167.36111 Prob > F 0.0002 R-squared Adj R-squared 230.638889 8 28.8298611 Total | 1398 9 155.333333 Root MSE 5.3693 grade Coef. Std. Err. t P>|t| [95% Conf. Interval] hours | _cons | -1.423611 .2237227 -6.36 0.000 -1.939517 -.9077057 103.4722 4.785783 21.62 0.000 92.43619 114.5083 II I| || II ||||

. sum Variable | Obs Mean Std. Dev. Min Маx grade | hours | 10 75 12.46328 56 94 10 20 8 8 32 reg grade hours Source | df MS Number of obs 10 F(1, 8) 40.49 Model | Residual | 1167.36111 1 1167.36111 Prob > F 0.0002 R-squared Adj R-squared 230.638889 8 28.8298611 Total | 1398 9 155.333333 Root MSE 5.3693 grade Coef. Std. Err. t P>|t| [95% Conf. Interval] hours | _cons | -1.423611 .2237227 -6.36 0.000 -1.939517 -.9077057 103.4722 4.785783 21.62 0.000 92.43619 114.5083 II I| || II ||||

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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Question

Estimate the average grade of Alex, who works 15 hours.

. sum
Variable |
Obs
Mean
Std. Dev.
Min
Маx
grade |
hours |
10
75
12.46328
56
94
10
20
8
8
32
reg grade hours
Source |
df
MS
Number of obs
10
F(1, 8)
40.49
Model |
Residual |
1167.36111
1
1167.36111
Prob > F
0.0002
R-squared
Adj R-squared
230.638889
8
28.8298611
Total |
1398
9
155.333333
Root MSE
5.3693
grade
Coef.
Std. Err.
t
P>|t|
[95% Conf. Interval]
hours |
_cons |
-1.423611
.2237227
-6.36
0.000
-1.939517
-.9077057
103.4722
4.785783
21.62
0.000
92.43619
114.5083
II I| || II ||||

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