The accompanying table provides data for​ tar, nicotine, and carbon monoxide​ (CO) contents in a certain brand of cigarette. Find the best regression equation for predicting the amount of nicotine in a cigarette. Why is it​ best? Is the best regression equation a good regression equation for predicting the nicotine​ content? Why or why​ not?   Tar    Nicotine    CO 4    0.5    4 16    1.0    18 17    1.1    18 13    0.7    17 13    0.7    18 14    0.9    14 15    1.1    16 15    1.2    16 15    1.2    14 9    0.7    12 14    0.7    18 13    0.8    18 13    0.8    19 15    1.1    16 2    0.2    3 14    1.1    17 15    0.9    15 14    0.8    18 14    1.1    16 14    0.9    17 16    1.1    14 14    1.0    16 7    0.6    7 17    1.3    15 14    1.1    14

MATLAB: An Introduction with Applications
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The accompanying table provides data for​ tar, nicotine, and carbon monoxide​ (CO) contents in a certain brand of cigarette. Find the best regression equation for predicting the amount of nicotine in a cigarette. Why is it​ best? Is the best regression equation a good regression equation for predicting the nicotine​ content? Why or why​ not?
 
Tar    Nicotine    CO
4    0.5    4
16    1.0    18
17    1.1    18
13    0.7    17
13    0.7    18
14    0.9    14
15    1.1    16
15    1.2    16
15    1.2    14
9    0.7    12
14    0.7    18
13    0.8    18
13    0.8    19
15    1.1    16
2    0.2    3
14    1.1    17
15    0.9    15
14    0.8    18
14    1.1    16
14    0.9    17
16    1.1    14
14    1.0    16
7    0.6    7
17    1.3    15
14    1.1    14
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