A group of researchers wanted to look at factors that affect current salary. They randomly selected individuals with providing information on current salary, beginning salary, previous experience (in months) when hired, and total years of education for a sample of 100 employees in a firm. Compare the final equation with the first regression equation. What recommendations do you have about using the final equation? Give reasons for your answer. Current Salary Beginning Salary Previous Experience (months) Education (years) $57,000 $27,000 144 15 $40,200 $18,750 36 16 $21,450 $12,000 381 12 $21,900 $13,200 190 8 $45,000 $21,000 138 15 $32,100 $13,500 67 15 $36,000 $18,750 114 15 $21,900 $9,750 0 12 $27,900 $12,750 115 15 $24,000 $13,500 244 12 $30,300 $16,500 143 16 $28,350 $12,000 26 8 $27,750 $14,250 34 15 $35,100 $16,800 137 15 $27,300 $13,500 66 12 $40,800 $15,000 24 12 $46,000 $14,250 48 15 $103,750 $27,510 70 16 $23,700 $13,500 359 15 $26,550 $14,250 61 15 $27,600 $15,000 75 12 $25,800 $15,000 143 12 $42,300 $26,250 126 16 $30,750 $15,000 451 8 $26,700 $12,900 18 12 $20,850 $12,000 163 12 $35,250 $15,000 54 15 $26,750 $15,000 55 15 $26,550 $13,050 11 12 $27,750 $12,000 11 12 $25,050 $12,750 123 16 $66,000 $47,490 150 16 $52,650 $19,500 20 16 $45,650 $23,250 55 16 $30,900 $15,000 25 15 $29,400 $16,500 24 15 $24,900 $11,250 0 12 $19,650 $10,950 11 12 $22,050 $10,950 9 12 $25,500 $12,000 11 12 $28,200 $12,750 19 15 $23,100 $11,250 13 12 $25,500 $11,400 9 12 $17,100 $10,200 0 8 $68,125 $32,490 29 18 $30,600 $15,750 460 12 $52,125 $27,480 221 19 $61,875 $36,750 199 19 $21,400 $11,000 18 8 $19,650 $11,250 5 12 $22,350 $11,250 5 12 $23,400 $11,250 18 12 $24,300 $10,950 8 12 $28,500 $11,250 4 12 $19,950 $11,250 8 12 $23,400 $11,250 0 12 $34,500 $17,250 3 16 $18,150 $10,950 0 12 $21,750 $12,450 318 8 $59,300 $33,850 270 12 $24,450 $14,250 117 12 $101,500 $60,600 140 16 $35,700 $16,500 72 12 $22,200 $16,500 7 12 $22,950 $13,950 22 15 $23,100 $12,000 228 12 $56,750 $30,000 15 16 $29,100 $12,750 375 17 $37,650 $15,750 132 12 $27,900 $13,500 32 12 $21,150 $12,000 159 8 $31,200 $15,750 155 12 $20,550 $11,250 154 12 $20,700 $11,250 2 12 $21,300 $11,250 3 12 $24,300 $15,000 121 12 $19,650 $13,950 133 12 $60,000 $32,490 17 17 $30,300 $15,750 55 15 $61,250 $33,000 9 19 $36,000 $19,500 21 19 $25,200 $18,750 344 8 $30,750 $15,000 56 12 $33,540 $15,750 47 12 $34,950 $20,250 55 16 $40,350 $16,500 80 15 $30,270 $15,750 80 12 $26,250 $16,050 264 8 $32,400 $15,000 64 15 $20,400 $11,250 0 12 $24,150 $12,750 96 8 $23,850 $13,500 122 15 $29,700 $13,500 26 12 $21,600 $13,500 228 8 $24,450 $15,750 87 12 $29,050 $17,000 86 15 $100,000 $44,100 128 16 $49,000 $20,550 86 15 $16,350 $10,200 163 12 $70,000 $21,750 19 16 Current Salary Beginning Salary Previous Experience (months) Education (years) $57,000 $27,000 144 15 $40,200 $18,750 36 16 $21,450 $12,000 381 12 $21,900 $13,200 190 8 $45,000 $21,000 138 15 $32,100 $13,500 67 15 $36,000 $18,750 114 15 $21,900 $9,750 0 12 $2.

1. A group of researchers wanted to look at factors that affect current salary. They randomly
selected individuals with providing information on current salary, beginning salary, previous
experience (in months) when hired, and total years of education for a sample of 100 employees
in a firm.
Compare the final equation with the first regression equation. What recommendations do you
have about using the final equation? Give reasons for your answer.
Current Salary
Beginning Salary
Previous Experience (months)
Education (years)
$57,000
$27,000
144
15
$40,200
$18,750
36
16
$21,450
$12,000
381
12
$21,900
$13,200
190
8
$45,000
$21,000
138
15
$32,100
$13,500
67
15
$36,000

2. $18,750
114
15
$21,900
$9,750
0
12
$27,900
$12,750
115
15
$24,000
$13,500
244
12
$30,300
$16,500
143
16
$28,350
$12,000
26
8
$27,750
$14,250
34
15
$35,100
$16,800
137
15
$27,300
$13,500
66
12
$40,800

3. $15,000
24
12
$46,000
$14,250
48
15
$103,750
$27,510
70
16
$23,700
$13,500
359
15
$26,550
$14,250
61
15
$27,600
$15,000
75
12
$25,800
$15,000
143
12
$42,300
$26,250
126
16
$30,750
$15,000
451
8
$26,700

4. $12,900
18
12
$20,850
$12,000
163
12
$35,250
$15,000
54
15
$26,750
$15,000
55
15
$26,550
$13,050
11
12
$27,750
$12,000
11
12
$25,050
$12,750
123
16
$66,000
$47,490
150
16
$52,650
$19,500
20
16
$45,650

5. $23,250
55
16
$30,900
$15,000
25
15
$29,400
$16,500
24
15
$24,900
$11,250
0
12
$19,650
$10,950
11
12
$22,050
$10,950
9
12
$25,500
$12,000
11
12
$28,200
$12,750
19
15
$23,100
$11,250
13
12
$25,500

6. $11,400
9
12
$17,100
$10,200
0
8
$68,125
$32,490
29
18
$30,600
$15,750
460
12
$52,125
$27,480
221
19
$61,875
$36,750
199
19
$21,400
$11,000
18
8
$19,650
$11,250
5
12
$22,350
$11,250
5
12
$23,400

7. $11,250
18
12
$24,300
$10,950
8
12
$28,500
$11,250
4
12
$19,950
$11,250
8
12
$23,400
$11,250
0
12
$34,500
$17,250
3
16
$18,150
$10,950
0
12
$21,750
$12,450
318
8
$59,300
$33,850
270
12
$24,450

8. $14,250
117
12
$101,500
$60,600
140
16
$35,700
$16,500
72
12
$22,200
$16,500
7
12
$22,950
$13,950
22
15
$23,100
$12,000
228
12
$56,750
$30,000
15
16
$29,100
$12,750
375
17
$37,650
$15,750
132
12
$27,900

9. $13,500
32
12
$21,150
$12,000
159
8
$31,200
$15,750
155
12
$20,550
$11,250
154
12
$20,700
$11,250
2
12
$21,300
$11,250
3
12
$24,300
$15,000
121
12
$19,650
$13,950
133
12
$60,000
$32,490
17
17
$30,300

10. $15,750
55
15
$61,250
$33,000
9
19
$36,000
$19,500
21
19
$25,200
$18,750
344
8
$30,750
$15,000
56
12
$33,540
$15,750
47
12
$34,950
$20,250
55
16
$40,350
$16,500
80
15
$30,270
$15,750
80
12
$26,250

11. $16,050
264
8
$32,400
$15,000
64
15
$20,400
$11,250
0
12
$24,150
$12,750
96
8
$23,850
$13,500
122
15
$29,700
$13,500
26
12
$21,600
$13,500
228
8
$24,450
$15,750
87
12
$29,050
$17,000
86
15
$100,000

12. $44,100
128
16
$49,000
$20,550
86
15
$16,350
$10,200
163
12
$70,000
$21,750
19
16
Current Salary
Beginning Salary
Previous Experience (months)
Education (years)
$57,000
$27,000
144
15
$40,200
$18,750
36
16
$21,450
$12,000
381
12
$21,900
$13,200
190
8
$45,000

13. $21,000
138
15
$32,100
$13,500
67
15
$36,000
$18,750
114
15
$21,900
$9,750
0
12
$27,900
$12,750
115
15
$24,000
$13,500
244
12
$30,300
$16,500
143
16
$28,350
$12,000
26
8
$27,750
$14,250
34
15
$35,100

14. $16,800
137
15
$27,300
$13,500
66
12
$40,800
$15,000
24
12
$46,000
$14,250
48
15
$103,750
$27,510
70
16
$23,700
$13,500
359
15
$26,550
$14,250
61
15
$27,600
$15,000
75
12
$25,800
$15,000
143
12
$42,300

15. $26,250
126
16
$30,750
$15,000
451
8
$26,700
$12,900
18
12
$20,850
$12,000
163
12
$35,250
$15,000
54
15
$26,750
$15,000
55
15
$26,550
$13,050
11
12
$27,750
$12,000
11
12
$25,050
$12,750
123
16
$66,000

16. $47,490
150
16
$52,650
$19,500
20
16
$45,650
$23,250
55
16
$30,900
$15,000
25
15
$29,400
$16,500
24
15
$24,900
$11,250
0
12
$19,650
$10,950
11
12
$22,050
$10,950
9
12
$25,500
$12,000
11
12
$28,200

17. $12,750
19
15
$23,100
$11,250
13
12
$25,500
$11,400
9
12
$17,100
$10,200
0
8
$68,125
$32,490
29
18
$30,600
$15,750
460
12
$52,125
$27,480
221
19
$61,875
$36,750
199
19
$21,400
$11,000
18
8
$19,650

18. $11,250
5
12
$22,350
$11,250
5
12
$23,400
$11,250
18
12
$24,300
$10,950
8
12
$28,500
$11,250
4
12
$19,950
$11,250
8
12
$23,400
$11,250
0
12
$34,500
$17,250
3
16
$18,150
$10,950
0
12
$21,750

19. $12,450
318
8
$59,300
$33,850
270
12
$24,450
$14,250
117
12
$101,500
$60,600
140
16
$35,700
$16,500
72
12
$22,200
$16,500
7
12
$22,950
$13,950
22
15
$23,100
$12,000
228
12
$56,750
$30,000
15
16
$29,100

20. $12,750
375
17
$37,650
$15,750
132
12
$27,900
$13,500
32
12
$21,150
$12,000
159
8
$31,200
$15,750
155
12
$20,550
$11,250
154
12
$20,700
$11,250
2
12
$21,300
$11,250
3
12
$24,300
$15,000
121
12
$19,650

21. $13,950
133
12
$60,000
$32,490
17
17
$30,300
$15,750
55
15
$61,250
$33,000
9
19
$36,000
$19,500
21
19
$25,200
$18,750
344
8
$30,750
$15,000
56
12
$33,540
$15,750
47
12
$34,950
$20,250
55
16
$40,350

22. $16,500
80
15
$30,270
$15,750
80
12
$26,250
$16,050
264
8
$32,400
$15,000
64
15
$20,400
$11,250
0
12
$24,150
$12,750
96
8
$23,850
$13,500
122
15
$29,700
$13,500
26
12
$21,600
$13,500
228
8
$24,450

23. $15,750
87
12
$29,050
$17,000
86
15
$100,000
$44,100
128
16
$49,000
$20,550
86
15
$16,350
$10,200
163
12
$70,000
$21,750
19
16
Solution
Current Salary =-4,076.1839+1.7031*Beginning Salary-10.7273*Previous Experience
(months)+746.1565*Education (years) =38024.11Regression outputconfidence
intervalvariablescoefficientsstd. error t (df=96)p-value95% lower95% upperIntercept-
4,076.18394,218.4445-0.966.3363-12,449.72974,297.3620Beginning
Salary1.70310.113614.9976.72E-271.47771.9285Previous Experience (months)-10.72737.7898-
1.377.1717-26.19004.7354Education (years)746.1565352.74432.115.037045.96461,446.3485