HP 17bII manual Number of Minutes Dollar Sales, Radio, Advertising Values

	Number of Minutes	Dollar Sales
	of Radio
	Advertising	(y-values,
	(x-values,	SALES)
	MINUTES)
Week 1	2	$1,400
Week 2	1	$ 920
Week 3	3	$1,100
Week 4	5	$2,265
Week 5	5	$2,890
Week 6	4	$2,200

BJ’s wants to determine whether there is a linear relationship between the amount of radio advertising and the weekly sales. If a strong relationship exists, BJ’s wants to use the relationship to forecast sales. A graph of the data looks like this:

y

3,000

2,000

SALES in Dollars

1,000 B

0 1

(forecasted)

	8
	.8
	5
2
4
＝
M

x

2	3	4	5	6	7
		of Advertising

10: Running Total and Statistics 135

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