Perform a regression analysis for predicated reliability and price to develop an estimated regression

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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In Excel:

1a)Develop a 95% confidence interval estimate that the higher the price of the car, the higher the road test scores. (For assistance, see the Excel steps on page 415 of your textbook).

1b) What are the upper and lower limits for car cost and road test score?

1c)Perform a regression analysis for predicated reliability and price to develop an estimated regression equation that could be used to predict the reliability and price.

A
B
C
D
E
F
G
Road-
Cost/
Test
Predicted
Value
1 Car
2 Nissan Altima 2.5 S (4-cyl.)
3 Kia Optima LX (2.4)
4 Subaru Legacy 2.5i Premium
5 Ford Fusion Hybrid
6 Honda Accord LX-P (4-cyl.)
7 Mazda6 i Sport (4-cyl.)
Price (S)
Mile
Score Reliability
Score
23,970.00 0.59
91
4
1.75
21,885.00 0.58
81
4
1.73
23,830.00 0.59
83
4
1.73
32,360.00 0.63
84
5
1.70
23,730.00 0.56
80
4
1.62
22,035.00 0.58
73
4
1.60
8 Hyundai Sonata GLS (2.4)
9 Ford Fusion SE (4-cyl.)
21,800.00 0.56
89
3
1.58
23,625.00 0.57
76
1.55
10 Chevrolet Malibu LT (4-cyl.) 24,115.00 0.57
11 Kia Optima SX (2.0T)
12 Ford Fusion SEL (V6)
13 Nissan Altima 3.5 SR (V6)
14 Hyundai Sonata Limited (2.0T) 28,090.00 0.66
15 Honda Accord EX-L (V6)
16 Mazda6 s Grand Touring (V6) 30,790.00 0.74
17 Ford Fusion SEL (V6, AWD) 30,055.00 0.71
18 Subaru Legacy 3.6R Limited
19 Chevrolet Malibu LTZ (V6)
20 Chrysler 200 Limited (V6)
21 Chevrolet Impala LT (3.6)
74
3
1.48
29,050.00 0.72
84
4
1.43
28,400.00 0.67
80
4
1.42
30,335.00 0.69
93
1.42
89
3
1.39
28,695.00 0.67
90
1.36
81
1.34
75
1.32
30,094.00 0.71
88
1.29
28,045.00 0.67
83
1.20
27,825.00 0.70
52
5
1.20
28,995.00 0.67
63
3
1.05
4.
4.
3.
4.
4.
3.
3.
Transcribed Image Text:A B C D E F G Road- Cost/ Test Predicted Value 1 Car 2 Nissan Altima 2.5 S (4-cyl.) 3 Kia Optima LX (2.4) 4 Subaru Legacy 2.5i Premium 5 Ford Fusion Hybrid 6 Honda Accord LX-P (4-cyl.) 7 Mazda6 i Sport (4-cyl.) Price (S) Mile Score Reliability Score 23,970.00 0.59 91 4 1.75 21,885.00 0.58 81 4 1.73 23,830.00 0.59 83 4 1.73 32,360.00 0.63 84 5 1.70 23,730.00 0.56 80 4 1.62 22,035.00 0.58 73 4 1.60 8 Hyundai Sonata GLS (2.4) 9 Ford Fusion SE (4-cyl.) 21,800.00 0.56 89 3 1.58 23,625.00 0.57 76 1.55 10 Chevrolet Malibu LT (4-cyl.) 24,115.00 0.57 11 Kia Optima SX (2.0T) 12 Ford Fusion SEL (V6) 13 Nissan Altima 3.5 SR (V6) 14 Hyundai Sonata Limited (2.0T) 28,090.00 0.66 15 Honda Accord EX-L (V6) 16 Mazda6 s Grand Touring (V6) 30,790.00 0.74 17 Ford Fusion SEL (V6, AWD) 30,055.00 0.71 18 Subaru Legacy 3.6R Limited 19 Chevrolet Malibu LTZ (V6) 20 Chrysler 200 Limited (V6) 21 Chevrolet Impala LT (3.6) 74 3 1.48 29,050.00 0.72 84 4 1.43 28,400.00 0.67 80 4 1.42 30,335.00 0.69 93 1.42 89 3 1.39 28,695.00 0.67 90 1.36 81 1.34 75 1.32 30,094.00 0.71 88 1.29 28,045.00 0.67 83 1.20 27,825.00 0.70 52 5 1.20 28,995.00 0.67 63 3 1.05 4. 4. 3. 4. 4. 3. 3.
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