Question

I got the quarterly figures of salesmen’s performance through yesterday and I thought
I’d see if there is any connection between how far they travel and how many sales
they make, so I put them through our computer package that does correlations, but I
can’t make sense of the bits at all- could you interpret, please.’
The information enclosed with the memo is as follows:
Salesman Mileage(km) No. of Sales Time with
Company(Months)
Smith 256 27 32
Adams 462 8 6
Williams 322 34 36
Green 211 25 28
Murphy 153 18 8
Evans 186 23 12
Newton 372 38 50
Sam 223 19 12
Regression equation for no. of sales on time with company is Y = 11.35 + 5.5X
Correlation coefficient: mileage and no. of sales = - 3. Regression equation for no. of
sales on mileage is:
Y = 24.72 -4X
i. Write notes to guide you in explaining to the sales manager what this
information means, and how it should be interpreted in the light of the data.
[10]
ii. Calculate the coefficient of determination of the time with the company and
number of sales and interpret it

Answer 1

correlation coefficient of milage and no. of sales = -3

two regression lines Y=11.35+5.5X

Y=24.72-4X

I have this type of problems but I don't no this solution.