Posted: January 25th, 2021

The marketing manager of a large supermarket chain would like to

The marketing manager of a large supermarket chain would like to determine the effect of shelf space (in feet) on the weekly sales of international food (in hundreds of dollars). A random sample of 12 equal –sized stores is selected, with the following results:

Shelf Space (X) Weekly Sales(Y)
10 2
10 2.6
10 1.8
15 2.3
15 2.8
15 3
20 2.7
20 3.1
20 3.2
25 3
25 3.3
25 3.5

 

  1. Find the equation of the regression line for these data. What is the value of the standard error of the estimate? Place your answer, rounded to 3 decimal places, in the blank. Do not use a dollar sign. For example, 0.345 would be a legitimate entry.
  2. Find the equation of the regression line for these data. What is the value of the coefficient of determination? Place your answer, rounded to 3 decimal places, in the blank. Do not use a dollar sign. For example, 0.345 would be a legitimate entry.

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