Table 1 Descriptive statistics of the study variables (N = 3116).

From: Evolving trajectories of educational expectations and science performance during middle school and STEM degree attainment of youth in adulthood

Study Variables

Mean/ Frequency

SD/%

1. Gender

  

 Female

1495

48%

 Male

1621

52%

2. Family composition

  

 Two-biological-parent

2715

87.1%

 Other

401

12.9%

3. Parental SES

39.723

16.575

4. Ethnicity

  

 White

2169

69.6%

 African American

504

16.2%

 Hispanic

284

9.1%

 Asian

112

3.6%

 Native American

47

1.5%

5. Educational expectations

  

 Grade 7

4.011

1.405

 Grade 8

4.005

1.846

 Grade 9

3.886

1.458

6. Science performance

  

 Grade 7

49.854

10.213

 Grade 8

53.282

10.814

 Grade 9

57.440

10.929

7. STEM degree

  

 Yes

281

9%

 No

2,835

91%

  1. Parental SES is parental socioeconomic status based on the Duncan’s Socioeconomic Index (SEI) score.
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