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Question

Cigarettes Is the nicotine content of a cigarette related

to the “tars”? A collection of data (in milligrams) on

29 cigarettes produced the scatterplot, residuals plot,

and regression analysis shown:

Dependent variable is: nicotine

R squared = 92.4,

Variable Coefficient

Constant 0.154030

Tar 0.065052

R squared = 92.4,

Variable Coefficient

Constant 0.154030

Tar 0.065052

a) Do you think a linear model is appropriate here?

Explain.

b) Explain the meaning of R2

Explain.

b) Explain the meaning of R2

in this context.

Tagged in

Math

Statistics

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Transcribed Image Text

1.2- 0.9+ 0.6 0.3- 8 12 Tar (mg) 16 0.075 0.000 -0.075 -0.150 0.3 0.6 0.9 Predicted 1.2 Residuals (6u) eupooIN