Consider the following data for two variables, x and y . x i 4 5 7 8 10 12 12 22 y i 12 14 16 15 18 20 24 20 #1) Compute the standardized residuals for these data. (Round your answers to two decimal...


Consider the following data for two variables,x andy.



























xi

457810121222

yi

1214161518202420


#1)


Compute the standardized residuals for these data. (Round your answers to two decimal places.)


















































xi


yi

Standardized Residuals
412
514
716
815
1018
1220
1224
2220


#2)


Compute the leverage values for these data. (Round your answers to two decimal places.)


















































xi


yi

Leverage Values
412
514
716
815
1018
1220
1224
2220

Do there appear to be any influential observations in these data? Explain.


Minitab identifies an observation as having high leverage if  hi
> 6/n = ____________.  Since the leverage for the observation at (xi, yi) = (__________) is greater than 6/n, we conclude that the observation is an influential observation.


(c)


Develop a scatter diagram for these data.



Does the scatter diagram indicate any influential observations? Explain.


The scatter diagram indicates that there are no influential observations because no points have a large influence on the estimated regression line

.The scatter diagram indicates that there is one influential observation because one point has a large influence on the estimated regression line.

   The scatter diagram indicates that there are two influential observations because two points have a large influence on the estimated regression line.

The scatter diagram indicates that there are more than two influential observations because more than two points have a large influence on t








Jun 08, 2022
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