If I attend 3 more tutorials, what impact do I expect this to have on my final mark? The R2 value for the model fit was 0.11. Write a sentence about what this represents with respect to the data.
If I attend 3 more tutorials, what impact do I expect this to have on my final mark? The R2 value for the model fit was 0.11. Write a sentence about what this represents with respect to the data.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
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If I attend 3 more tutorials, what impact do I expect this to have on my final mark?
-
-
The R2 value for the model fit was 0.11. Write a sentence about what this represents with respect to the data.
![You have been asked to analyse a suspected relationship between tutorial attendance
and final marks for a university course. The latest set of data includes final marks Y
(between 0 and 100) and tutorial attendance X (between 0 and 12) for 65 students.
You have done a regression analysis on the dataset in R and the output is given below,
along with a scatter plot of X and Y. Answer the subsequent questions regarding this
analysis.
80
Final Mark
60
40
T
T
o
O
0 0
00
O
O
o o
0 0 0
@0 00
0 00
O
ο απο
00
00 00
O
000
O®
ooo
o
2
4
6
8
10
12
Tutorials Attended
Figure 3: Q3) Scatterplot of marks against tutorial attendance.
Estimate Std. Error t value Pr(> |t|)
(Intercept)
44.1517
4.6207
9.555 7.17e-14
X
2.7914
0.5679
4.915 6.65e-06
Table 2: Q10) Regression summary.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6d7780b-011c-4769-a2d2-6de3a9660311%2F29cec706-8d54-40d0-acdf-bb5c215eb779%2Ff7wdgrh_processed.png&w=3840&q=75)
Transcribed Image Text:You have been asked to analyse a suspected relationship between tutorial attendance
and final marks for a university course. The latest set of data includes final marks Y
(between 0 and 100) and tutorial attendance X (between 0 and 12) for 65 students.
You have done a regression analysis on the dataset in R and the output is given below,
along with a scatter plot of X and Y. Answer the subsequent questions regarding this
analysis.
80
Final Mark
60
40
T
T
o
O
0 0
00
O
O
o o
0 0 0
@0 00
0 00
O
ο απο
00
00 00
O
000
O®
ooo
o
2
4
6
8
10
12
Tutorials Attended
Figure 3: Q3) Scatterplot of marks against tutorial attendance.
Estimate Std. Error t value Pr(> |t|)
(Intercept)
44.1517
4.6207
9.555 7.17e-14
X
2.7914
0.5679
4.915 6.65e-06
Table 2: Q10) Regression summary.
![2
1
Standardized residuals
-1
-2
0
00
039
081
Normal Q-Q
-2
000000000 0730.
2
-1
0
1
Theoretical Quantiles
aov(ANOV_X~ group)
Figure 1: Q9) QQ-plot.
Residuals
4
2
T
@oooo @DO O O
000 @xxxxxxxxxx@
0
000 ORDEIDO CO
-2
@13
-4
Residuals vs Fitted
10.0
039
11.0
10.5
11.5
Fitted values
aov(ANOV_X~ group)
Figure 2: Q9) Residual plot.
810](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6d7780b-011c-4769-a2d2-6de3a9660311%2F29cec706-8d54-40d0-acdf-bb5c215eb779%2F09wgjp2_processed.png&w=3840&q=75)
Transcribed Image Text:2
1
Standardized residuals
-1
-2
0
00
039
081
Normal Q-Q
-2
000000000 0730.
2
-1
0
1
Theoretical Quantiles
aov(ANOV_X~ group)
Figure 1: Q9) QQ-plot.
Residuals
4
2
T
@oooo @DO O O
000 @xxxxxxxxxx@
0
000 ORDEIDO CO
-2
@13
-4
Residuals vs Fitted
10.0
039
11.0
10.5
11.5
Fitted values
aov(ANOV_X~ group)
Figure 2: Q9) Residual plot.
810
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