

  

Selects MINUTES as x-list,

 

 

 

 *

SALES as y-list, indicates

 



 

 

 

 

current curve-fitting

 

 

 

 

model, and displays

 

 

 

 

FRCST menu.

 

 

 

Correlation coefficient for

 

 



 

 

 

 

linear model.

The correlation coefficient calculated above is acceptable to BJ’s. Using the linear model, estimate what the level of sales would be if the business purchased 7 minutes of advertising time per week.

7





Stores 7 in variable

 

 

 

 

 

MINUTES.

 

 

 

 



Forecasts the sales

 



 

 

 

 

 

 

resulting from 7 minutes of

 

 

 

 

 

radio advertising.

How many minutes of advertising should BJ’s buy if it wants to attain sales of $3,000?

3000

 



The business should buy

 

 

 

 

 



about 6 minutes of

 



 

 

 

 

 

 

 

 

advertising for sales of

 

 

 

 

 

 

$3,000.†

*If the model named here is not the one you want to use, press  and select the one you want.

†This result is not the same as it would be if SALES were the independent (x) variable, and MINUTES were the dependent (y) variable.

10: Running Total and Statistics 137

File name : English-M02-1-040308(Print).doc Print data : 2004/3/9