Assume we’re given the following data relating restaurant sales and the number of competitors within one mile

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QUESTION 1

Assume we’re given the following data relating restaurant sales and the number of competitors within one mile:

# competitors within one mile

Sales (in $k)

1

3.6

1

3.3

2

3.1

3

2.9

3

2.7

4

2.5

5

2.3

5

2.0


Let's derive the regression equation relating sales (y) and the number of local competitors (x):

 

y = b0 + b1x,

 

We want to compute the equation parameters b0 and b1

 

a)      what are the values of ∑ x , xbar (the average of the x values), and (∑ x)2?

b)     ∑y ,ybar (the average of the y values) and (∑ y)2?

 

Question 2

 

Compute the monthly seasonal indices for the following data, using a twelve-month moving average:

 

 

  • 9 years ago
Assume we’re given the following data relating restaurant sales and the number of competitors within one mile
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