Observation Brand Price ($) Megapixels Weight (oz.) Score 1 Canon 330 10 7 66 2 Canon 200 12 5 66 3 Canon 300 12 7 65 4 Canon 200 10 6 62 5 Canon 180 12 5 62 6 Canon 200 12 7 61 7 Canon 200 14 5 60 8 Canon 130 10 7 60 9 Canon 130 12 5 59 10 Canon 110 16 5 55 11 Canon 90 14 5 52 12 Canon 100 10 6 51 13 Canon 90 12 7 46 14 Nikon 270 16 5 65 15 Nikon 300 16 7 63 16 Nikon 200 14 6 61 17 Nikon 400 14 7 59 18 Nikon 120 14 5 57 19 Nikon 170 16 6 56 20 Nikon 150 12 5 56 21 Nikon 230 14 6 55 22 Nikon 180 12 6 53 23 Nikon 130 12 6 53 24 Nikon 80 12 7 52 25 Nikon 80 14 7 50 26 Nikon 100 12 4 46 27 Nikon 110 12 5 45 28 Nikon 130 14 4 42 Consumer Reports tested 166 different point-and-shoot digital cameras. Based upon factors such as the number of megapixels, weight (oz), image quality, and ease of use, they developed an overall score for each camera tested. The overall score ranges from 0 to 100, with higher scores indicating better overall test results. Selecting a camera with many options can be a difficult process, and price is certainly a key issue for most consumers. By spending more, will a consumer really get a superior camera? And, do cameras that have more megapixels, a factor often considered to be a good measure of picture quality, cost more than cameras with fewer megapixels. Data file named Cameras contains detailed information on the brand, average retail price ($), number of megapixels, weight (oz.), and the overall scores for the cameras. Using overall score as the dependent variable, develop an estimated regression equation given price, megapixels, and weight. What is the “goodness of fit” of your model?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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Observation	Brand	Price ($)	Megapixels	Weight (oz.)	Score
1	Canon	330	10	7	66
2	Canon	200	12	5	66
3	Canon	300	12	7	65
4	Canon	200	10	6	62
5	Canon	180	12	5	62
6	Canon	200	12	7	61
7	Canon	200	14	5	60
8	Canon	130	10	7	60
9	Canon	130	12	5	59
10	Canon	110	16	5	55
11	Canon	90	14	5	52
12	Canon	100	10	6	51
13	Canon	90	12	7	46
14	Nikon	270	16	5	65
15	Nikon	300	16	7	63
16	Nikon	200	14	6	61
17	Nikon	400	14	7	59
18	Nikon	120	14	5	57
19	Nikon	170	16	6	56
20	Nikon	150	12	5	56
21	Nikon	230	14	6	55
22	Nikon	180	12	6	53
23	Nikon	130	12	6	53
24	Nikon	80	12	7	52
25	Nikon	80	14	7	50
26	Nikon	100	12	4	46
27	Nikon	110	12	5	45
28	Nikon	130	14	4	42

Consumer Reports tested 166 different point-and-shoot digital cameras. Based upon factors such as the number of megapixels, weight (oz), image quality, and ease of use, they developed an overall score for each camera tested. The overall score ranges from 0 to 100, with higher scores indicating better overall test results. Selecting a camera with many options can be a difficult process, and price is certainly a key issue for most consumers. By spending more, will a consumer really get a superior camera? And, do cameras that have more megapixels, a factor often considered to be a good measure of picture quality, cost more than cameras with fewer megapixels. Data file named Cameras contains detailed information on the brand, average retail price ($), number of megapixels, weight (oz.), and the overall scores for the cameras.
Using overall score as the dependent variable, develop an estimated regression equation given price, megapixels, and weight.
What is the “goodness of fit” of your model?

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