Variable

Constant (b_o)

Slope (b₁)

R²

Critical Point, x*

Education

High school

17.2210 (3.20)¹*

0.5777 (5.61)**

0.548

40.8

Some college

−7.6340 (−1.43)

1.0700 (10.28)**

0.803

109.1

College

9.9997 (3.90)**

0.7946 (14.64)**

0.892

48.7

Postgraduate

27.4351 (6.94)**

0.5401 (5.09)**

0.499

59.7

Income

(thousands of dollars)

< 50

14.4223 (3.29)*

0.7960 (7.55)**

0.695

70.7

50 - 100

9.5064 (2.94)*

0.7752 (11.77)**

0.847

42.3

> 100

15.1985 (4.23)**

0.6357 (9.02)**

0.765

41.7

Age

18 - 29

21.6678 (6.42)**

0.6835 (7.85)**

0.720

68.5

30 - 44

14.9822 (4.17)**

0.7391 (9.05)**

0.759

57.4

45 - 64

−1.4414 (−0.46)

0.9343 (15.75)**

0.905

−21.9

65 and older

17.0778 (2.76)*

0.5702 (4.89)**

0.479

39.7

Race

White

14.7694 (2.84)*

0.5780 (6.28)**

0.603

35.0

Non-white

48.5584 (10.52)**

−0.0700 (−0.36)

0.005

45.4