Use the data in the table below to complete parts (a) through (c). 6 7 9 9 13 18 19 40 40 36 28 23 25 24 21 Click the icon to view the steps for finding influential points. (a) Construct a scatterplot of the data. Choose the correct graph below. O A. O B. OC. O D. Ay 12- Ay 50- Ay 12 40- 50 -12 -12- 0-

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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B) Identify any possible outliers.

 

C) Determine if the point is influential. To change in slope or intercept is significant if it is larger than 10%.

"The point (is/is not) an influential point because the slopes with the point included and without the point included (are/are not) significantly different, and the intercepts (are/are not) significantly different."

Use the data in the table below to complete parts (a) through (c).
6.
7
9.
9.
13
18
19
40
y
40
36
28
23
25
24
21
Click the icon to view the steps for finding influential points.
(a) Construct a scatterplot of the data. Choose the correct graph below.
O A.
В.
D.
Ay
12-
Ay
50-
Ay
12-
y
40-
50
40
-12-
0-
0-
-12-
50
40
Transcribed Image Text:Use the data in the table below to complete parts (a) through (c). 6. 7 9. 9. 13 18 19 40 y 40 36 28 23 25 24 21 Click the icon to view the steps for finding influential points. (a) Construct a scatterplot of the data. Choose the correct graph below. O A. В. D. Ay 12- Ay 50- Ay 12- y 40- 50 40 -12- 0- 0- -12- 50 40
An influential point
An outlier may or may not be an influential point. To determine if a point is
influential, find the regression lines including all the points in the data set, and
excluding the possible influential point. If the slope or y-intercept of the regression
line shows significant changes, the point can be considered influential. An
influential point can be removed from a data set only if there is proper justification.
a point in a data set that can greatly affect a regression line.
Transcribed Image Text:An influential point An outlier may or may not be an influential point. To determine if a point is influential, find the regression lines including all the points in the data set, and excluding the possible influential point. If the slope or y-intercept of the regression line shows significant changes, the point can be considered influential. An influential point can be removed from a data set only if there is proper justification. a point in a data set that can greatly affect a regression line.
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