How do I interpret or explain these results? I ran multiple regressions and these are my results. The dependent variable was the number of children.

Table 1: Regression Analysis of the determinant of Fertility in the US
Independent Variables	Unstandardized B	Standardized Beta
	white	Black	Other	White	Black	Other
Age at First Marriage	-.089	-.009	-.093	-.151	-.008	-.202
Number of Siblings	.068	.022	.057	.096	.044	.082
Age of respondent	.032	.047	.074	.351	.346	.519
Highest year of school completed	-.092	-.188	-.032	-.168	-.289	-.069
Highest year of school completed-Father	-.005	.022	-.008	.009	.031	-.019
Highest year of school completed-Mother	.001	-.012	-.045	.001	-.016	-.104
R2		.207	.237	.400
F-ratio		28.437	6.196	11.322