8. A management consultant has been hired to determine the relationship between Sales volume and the number of salespersons.
The data for a random sample of five companies are listed below.
Company	Salespersons	Volume of Sales (000s)
		x		y
A		1000		120
B		800		101
C		600		75
D		50		5
E		30		2
		2480		303
a) Determine the regression equation. (4 marks)
b) Compute the coefficient of correlation. Round to 4 decimal places. (4 marks)
c) Calculate the sales volume if the number of salespeople is 300. (2 marks)