Question
Hello, I need help with below question. How to solve this in minitab? Please provide the steps and explanation of each questions below. Please explain
Hello,
I need help with below question. How to solve this in minitab? Please provide the steps and explanation of each questions below. Please explain the step by step guide of dummy variable etc.
- Wine Spectator magazine contains articles and reviews on every aspect of the wine industry, including ratings of wine from around the world. In a recent issue they reviewed and scored 475 wines from the Piedmont region of Italy using a 100-point scale (Wine Spectator, April 30, 2011). The data shows how the Wine Spectator score each wine received is used to rate each wine as being classic, outstanding, very good, mediocre, or not recommended.
A key question for most consumers is whether paying more for a bottle of wine will result in a better wine. To investigate this question for wines from the Piedmont region we selected a random sample of 100 of the 475 wines that Wine Spectator reviewed. The data, contained in the file names WineRatings shows the price ($), the Wine Spectator score, and the rating for each wine.
- Develop a scatter diagram for the data treating Price ($) as the independent variable and Wine Spectator score as the dependent variable. Does a simple linear regression model appear to be appropriate?
- Use a simple linear regression model to develop an estimated regression equation to predict the Wine Spectator score on price. Construct a standardized residual plot. Based upon the standardized residual plot, does a simple linear regression model appear to be appropriate?
- Using a second-order model, develop an estimated regression equation to predict the Wine Spectator score on price.
- Do you prefer the estimated regression equation developed in part (b) or part (c)? Explain which one is a better fit to the regression assumptions.
Here is data. (Sorry I do not have option to attach excel data so attaching like below)
Number | Wine | Price | Score | Rating |
1 | Barolo 2006 | 52 | 91 | Outstanding |
2 | Barbera d'Alba Superiore 2007 | 30 | 90 | Outstanding |
3 | Barbera Piemonte Castelvero 2009 | 10 | 80 | Good |
4 | Barolo Cannubi 2006 | 120 | 93 | Outstanding |
5 | Barolo San Pietro 2006 | 75 | 91 | Outstanding |
6 | Chardonnay Langhe 2009 | 20 | 83 | Good |
7 | Gavi Minaia 2009 | 39 | 87 | Very Good |
8 | Langhe Faletto 2007 | 50 | 91 | Outstanding |
9 | Favorita Langhe White 2008 | 18 | 87 | Very Good |
10 | Langhe Brandini & Brandini 2008 | 31 | 88 | Very Good |
11 | Arneis Langhe 2009 | 18 | 84 | Good |
12 | Barolo Vigneto La Villa 2006 | 48 | 93 | Outstanding |
13 | Barbaresco Curr 2007 | 55 | 92 | Outstanding |
14 | Barolo Monfortino Riserva 2002 | 375 | 98 | Classic |
15 | Barbera d'Alba Lirano Soprano 2007 | 56 | 91 | Outstanding |
16 | Barbera d'Alba Superiore 2006 | 38 | 90 | Outstanding |
17 | Barolo Rocche dell'Annunziata 2006 | 100 | 93 | Outstanding |
18 | Barbaresco Silvio Giamello Vicenziana 2005 | 42 | 92 | Outstanding |
19 | Roero Arneis Renesio 2009 | 35 | 89 | Very Good |
20 | Langhe Sor San Lorenzo 2007 | 440 | 97 | Classic |
21 | Barbaresco Silvio Giamello Vicenziana 2006 | 39 | 89 | Very Good |
22 | Barbera d'Alba La Gamberaja 2007 | 35 | 87 | Very Good |
23 | Langhe White Cinerino 2008 | 38 | 86 | Very Good |
24 | Barolo Bricco Viole 2006 | 53 | 88 | Very Good |
25 | Barbera d'Alba Tradizione 2007 | 20 | 88 | Very Good |
26 | Barbera d'Alba 2009 | 25 | 89 | Very Good |
27 | Roero Arneis Valle dei Lunghi 2009 | 20 | 84 | Good |
28 | Piemonte La Valletta 2008 | 29 | 82 | Good |
29 | Barolo Brunate 2006 | 90 | 91 | Outstanding |
30 | Barolo Vigna Rionda 2004 | 125 | 91 | Outstanding |
31 | Barolo Gramolere 2006 | 55 | 90 | Outstanding |
32 | Barbera d'Asti Superiore Chers 2006 | 25 | 92 | Outstanding |
33 | Barbera d'Alba 2008 | 25 | 93 | Outstanding |
34 | Barbera d'Alba Serraboella 2008 | 32 | 89 | Very Good |
35 | Cortese Piemonte Castelvero 2009 | 10 | 84 | Good |
36 | Barolo Bussia Romirasco 2006 | 180 | 97 | Classic |
37 | Roero Arneis Saglietto 2008 | 27 | 90 | Outstanding |
38 | Barbaresco Bricco Asili 2007 | 147 | 92 | Outstanding |
39 | Barbera d'Alba Superiore 2008 | 38 | 89 | Very Good |
40 | Barolo Prap 2005 | 57 | 89 | Very Good |
41 | Moscato d'Asti 2009 | 22 | 89 | Very Good |
42 | Gavi Vigna del Lago 2009 | 19 | 87 | Very Good |
43 | Barbaresco Serraboella 2007 | 72 | 94 | Outstanding |
44 | Barolo Bussia Colonnello 2006 | 150 | 94 | Outstanding |
45 | Barolo Vigneto Arborina 2006 | 60 | 93 | Outstanding |
46 | Dolcetto d'Alba Fontanazza 2009 | 17 | 88 | Very Good |
47 | Barolo 2006 | 55 | 88 | Very Good |
48 | Gavi 2009 | 18 | 86 | Very Good |
49 | Gavi 2009 | 19 | 88 | Very Good |
50 | Barbaresco Il Bricco 2006 | 109 | 91 | Outstanding |
51 | Barbera d'Alba Filatura 2008 | 12 | 87 | Very Good |
52 | Barbera d'Alba Zio Nando 2008 | 35 | 89 | Very Good |
53 | Dolcetto d'Alba 2009 | 20 | 89 | Very Good |
54 | Barbaresco 2007 | 210 | 93 | Outstanding |
55 | Chardonnay Langhe 2009 | 21 | 78 | Mediocre |
56 | Barolo 2006 | 37 | 93 | Outstanding |
57 | Langhe 2006 | 16 | 89 | Very Good |
58 | Barbaresco Ovello 2006 | 58 | 88 | Very Good |
59 | Nebbiolo Langhe Cerretta 2008 | 75 | 92 | Outstanding |
60 | Barbera d'Asti Superiore Montruc 2008 | 39 | 88 | Very Good |
61 | Barolo Le Rocche del Falletto Riserva 2004 | 300 | 96 | Classic |
62 | Barbaresco 2007 | 35 | 90 | Outstanding |
63 | Dolcetto d'Alba 2009 | 22 | 90 | Outstanding |
64 | Barolo 2006 | 90 | 92 | Outstanding |
65 | Barolo Preda 2006 | 95 | 93 | Outstanding |
66 | Barbera del Monferrato Superiore Perlydia 2003 | 21 | 89 | Very Good |
67 | Grangia NV | 10 | 83 | Good |
68 | Langhe White Le Pernici 2009 | 25 | 86 | Very Good |
69 | Barbera d'Asti Superiore Il Cascinone Rive 2007 | 29 | 90 | Outstanding |
70 | Barbera d'Alba Piani 2008 | 23 | 89 | Very Good |
71 | Barolo Ciabot Mentin Ginestra 2006 | 90 | 96 | Classic |
72 | Dolcetto d'Alba 2009 | 18 | 88 | Very Good |
73 | Barbera d'Asti Bricco dell'Uccellone 2007 | 54 | 89 | Very Good |
74 | Barolo Marenca 2006 | 62 | 96 | Classic |
75 | Chardonnay Piemonte L'Altro 2009 | 21 | 88 | Very Good |
76 | Barolo Serralunga 2006 | 37 | 88 | Very Good |
77 | Dolcetto d'Alba Superiore 2008 | 24 | 86 | Very Good |
78 | Barolo 2006 | 52 | 91 | Outstanding |
79 | Gavi Black Label 2009 | 55 | 88 | Very Good |
80 | Langhe Sor Tildn 2007 | 440 | 95 | Classic |
81 | Barolo Mosconi 2006 | 105 | 90 | Outstanding |
82 | Nebbiolo Langhe Ginestrino 2008 | 40 | 89 | Very Good |
83 | Barolo La Rosa 2006 | 120 | 92 | Outstanding |
84 | Nebbiolo Langhe 2008 | 26 | 90 | Outstanding |
85 | Dogliani Pap Celso 2008 | 28 | 88 | Very Good |
86 | Barolo Lazzarito 2006 | 150 | 93 | Outstanding |
87 | Barolo 2006 | 37 | 91 | Outstanding |
88 | Barbaresco Asij 2007 | 43 | 89 | Very Good |
89 | Barbaresco Vanotu 1999 | 120 | 91 | Outstanding |
90 | Langhe Barilin 2005 | 25 | 87 | Very Good |
91 | Barbera d'Alba Pistn 2009 | 25 | 88 | Very Good |
92 | Barolo P Vigne 2006 | 40 | 90 | Outstanding |
93 | Barolo Broglio 2005 | 57 | 90 | Outstanding |
94 | Dogliani Sir d'Jermu 2008 | 27 | 89 | Very Good |
95 | Dolcetto d'Alba 2008 | 19 | 88 | Very Good |
96 | Gavi La Luciana 2009 | 15 | 87 | Very Good |
97 | Dolcetto d'Alba Autinot 2009 | 13 | 88 | Very Good |
98 | Barolo Rocche di Castiglione 2006 | 69 | 92 | Outstanding |
99 | Dolcetto d'Alba 2008 | 13 | 87 | Very Good |
100 | Chardonnay Langhe Bastia 2008 | 50 | 87 | Very Good |
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