HP 17bII+ - Manual (Page 137)

10: Running Total and Statistics 137
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
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 
  

*

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
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 


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.