Analyze the regression model for the wine quality data in Exercise 3.7 for leverage and influence. Discuss your results. Exercise 3.7 The quality of Pinot Noir wine is thought to be related to the...

Clarity,

Aroma,

Body,

Flavor,

Oakiness.

Quality.

X₁

X₂

X₃

x₄

X₅

y

Region

1

3.3

2.8

3.1

4.1

9.8

1

1

4.4

4.9

3.5

3.9

12.6

1

1

3.9

5.3

4.8

4.7

11.9

1

1

3.9

2.6

3.1

3.6

11.1

1

1

5.6

5.1

5.5

5.1

13.3

1

1

4.6

4.7

5

4.1

12.8

1

1

4.8

4.8

4.8

3.3

12.8

1

1

5.3

4.5

4.3

5.2

12

1

1

4.3

4.3

3.9

2.9

13.6

3

1

4.3

3.9

4.7

3.9

13.9

1

1

5.1

4.3

4.5

3.6

14.4

3

0.5

3.3

5.4

4.3

3.6

12.3

2

0.8

5.9

5.7

7

4.1

16.1

3

0.7

7.7

6.6

6.7

3.7

16.1

3

1

7.1

4.4

5.8

4.1

15.5

3

0.9

5.5

5.6

5.6

4.4

15.5

3

1

6.3

5.4

4.8

4.6

13.8

3

1

5

5.5

5.5

4.1

13.8

3

1

4.6

4.1

4.3

3.1

11.3

1

0.9

3.4

5

3.4

3.4

7.9

2

0.9

6.4

5.4

6.6

4.8

15.1

3

1

5.5

5.3

5.3

3.8

13.5

3

0.7

4.7

4.1

5

3.7

10.8

2

0.7

4.1

4

4.1

4

9.5

2

1

6

5.4

5.7

4.7

12.7

3

1

4.3

4.6

4.7

4.9

11.6

2

1

3.9

4

5.1

5.1

11.7

1

1

5.1

4.9

5

5.1

11.9

2

1

3.9

4.4

5

4.4

10.8

2

1

4.5

3.7

2.9

3.9

8.5

2

1

5.2

4.3

5

6

10.7

2

0.8

4.2

3.8

3

4.7

9.1

1

1

3.3

3.5

4.3

4.5

12.1

1

1

6.8

5

6

5.2

14.9

3

0.8

5

5.7

5.5

4.8

13.5

1

0.8

3.5

4.7

4.2

3.3

12.2

1

0.8

4.3

5.5

3.5

5.8

10.3

1

0.8

5.2

4.8

5.7

3.5

13.2

1