Question

Advertising and Sales. Use the technology of your choice to do the following.

a. Obtain the scatterplot matrix for the data.

b. Use the scatterplot matrix to assess whether a multiple linear regression model might be appropriate for predicting sales.

c. Determine the regression equation for the data.

d. Apply the regression equation to predict total sales if the amounts spent on television, magazine, and radio advertising are $9.5 million, $4.3 million, and $5.2 million, respectively.

Television Magazine Radio Sales
X2
Xz
8.3
4.4
361.1
6.1
6.3
4.2
4.9
344.0
9.9
5.9
6.3
377.9
3.3
371.5
9.4
6.1
5.2
365.4
10.4
2.7
364.5
9.0
3.5
5.1
9.2
4.1
6.0
372.9
6.4
10.6
4.8
379.4
9.3
4.2
5.5
362.6
387.5
10.5
6.0
5.9
Expand
Transcribed Image Text

Television Magazine Radio Sales X2 Xz 8.3 4.4 361.1 6.1 6.3 4.2 4.9 344.0 9.9 5.9 6.3 377.9 3.3 371.5 9.4 6.1 5.2 365.4 10.4 2.7 364.5 9.0 3.5 5.1 9.2 4.1 6.0 372.9 6.4 10.6 4.8 379.4 9.3 4.2 5.5 362.6 387.5 10.5 6.0 5.9

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