. Author manuscript; available in PMC: 2011 Jul 6.

Published in final edited form as: Am J Educ (Chic Ill). 2010 Nov;117(1):79–107. doi: 10.1086/656347

Table 2.

Descriptive Statistics for Key Study Variables, by Family Socioeconomic Status

	Mean (SD) for Family SES Groups ^a
	Low	Medium	High
Academic Factors
Math credits by end of high school	2.36_c (1.67)	2.89_b (1.03)	3.52_a (.71)
Initial math course-taking level	2.87_c (2.10)	3.91_b (1.94)	4.83_a (1.75)
Math test score in 8^th grade	28.33_c (.74)	35.15_b (11.17)	45.48_a (11.50)
Algebra I enrollment in 8^th grade	.20_c (.40)	.31_b (.46)	.58_a (.49)
Information Factors
Parent discussion of coursework (8^th)	2.17_c (.54)	2.39_b (.49)	2.58_a (.43)
Parent discussion of coursework (10^th)	1.86_c (.52)	2.01_b (.52)	2.21_a (.48)
Number of consultants for coursework (8^th)	2.89_c (1.38)	3.23_b (1.28)	3.54_a (1.18)
Number of consultants for coursework (10^th)	.59_c (.90)	.90_b (1.07)	1.11_a (1.16)
Teacher encouragement of math coursework (10^th)	1.87_b (.83)	1.91_b (.78)	2.03_a (.73)
n	2,406	9,052	2,362

Note.—Means on the same row with different subscripts differed significantly (p < .001) from each other, as determined by one-way anova. Low SES group included youth with scores on the family SES composite at least one standard deviation lower than the sample mean. Medium SES group included youth with scores between one standard deviation below and one standard deviation above the sample mean. High SES group included youth with scores at least one standard deviation above the sample mean.