Question

# A survey conducted by a research team was to investigate how the education level, tenure in current employment,

and age are related to annual income. A sample of 20 employees is selected and the data are given below.

**Education (No. of years) Length of tenure in current employment (No. of years) Age (No. of years) Annual income($)**

17 8 40 124,000

12 12 41 30,000

20 9 44 193,000

14 4 42 88,000

12 1 19 27,000

14 9 28 43,000

12 8 43 96,000

18 10 37 110,000

16 12 36 88,000

11 7 39 36,000

16 14 36 81,000

12 4 22 38,000

16 17 45 140,000

13 7 42 11,000

11 6 18 21,000

20 4 40 151,000

19 7 35 124,000

16 12 38 48,000

12 2 19 26,000

10 6 44 124,000

**Is this correct regression↓? If not, please tell me collect regression. **

**Also, please tell me how to solve following question.**

a. Check if the *F* test leads to conclude that an overall regression relationship exists. If yes, use the *t* test to determine the significance of each independent variable.

b. What is the conclusion for each test at the 0.05 level of significance?

c. Remove all independent variables that are not significant at the 0.05 level of significance from the estimated regression equation.

d. What is your estimated regression equation in this case?

#### Top Answer

a. Check if the F test leads to conclude that an overall regression relationship exists. If yes, use the t... View the full answer