The managers of a brokerage firm are interested in finding out if the number of clients a
Question:
The managers of a brokerage firm are interested in finding out if the number of clients a broker brings into the firm affects the sales generated by the broker. They sampled 12 brokers and determined the number of new clients they have enrolled in their lat year and their sales amount in thousands of dollars.
Clients (X) | Sales (Y) |
27 | 52 |
11 | 37 |
42 | 64 |
33 | 55 |
15 | 29 |
15 | 34 |
25 | 58 |
36 | 59 |
28 | 44 |
30 | 48 |
17 | 31 |
22 | 38 |
The estimated equation of the line is
Select one:
A. Y(hat)=17.7+1.12X
B. Y(hat)=-17.7+1.12X
C. Y(hat)=17.7-1.12X
D. Y(hat)=-17.7-1.12X
The Coefficient of Determination is:
Select one:
A. 0.8858
B. 0.7631
C. 0.7846
D. 0.5
The correlation coefficient for this data set is
Select one:
A. -0.7846
B. -0.8858
C. 0.7846
D. 0.8858
Elementary Statistics In Social Research Essentials
ISBN: 9780205638000
3rd Edition
Authors: Jack A. Levin, James Alan Fox