AFF Table

Subject	Total	MOE	White alone, not Hispanic or Latino	MOE	Black or African American	MOE	Hispanic or Latino origin (of any race)	MOE
Population 15 to 19 years	758,907	+/-9,812	605,976	+/-3,242	95,049	+/-6,530	37,364	+/-4,640

HOUSEHOLD TYPE
In married-couple households	65.6%	+/-1.7	73.9%	+/-1.9	21.0%	+/-4.6	48.5%	+/-9.2
In male householder, no wife present, family households	7.0%	+/-1.2	6.1%	+/-1.1	9.9%	+/-5.2	13.5%	+/-8.0
In female householder, no husband present, family households	24.6%	+/-1.5	17.3%	+/-1.5	66.2%	+/-6.6	34.6%	+/-8.4
In nonfamily households	2.8%	+/-0.6	2.6%	+/-0.7	2.9%	+/-2.0	3.4%	+/-1.7

SCHOOL ENROLLMENT
Enrolled in school	672,909	+/-10,871	541,565	+/-7,553	81,457	+/-6,304	29,483	+/-4,274
Public	85.1%	+/-1.3	83.9%	+/-1.4	88.9%	+/-3.8	94.9%	+/-3.9
Private	14.9%	+/-1.3	16.1%	+/-1.4	11.1%	+/-3.8	5.1%	+/-3.9
Not enrolled in school	85,998	+/-8,401	64,411	+/-7,409	13,592	+/-4,217	7,881	+/-2,735

MARITAL STATUS AND FERTILITY
Male	393,911	+/-7,136	315,273	+/-2,542	51,132	+/-5,081	18,300	+/-3,682
Ever married	1.1%	+/-0.4	0.8%	+/-0.3	0.7%	+/-1.1		N
Female	364,996	+/-7,104	290,703	+/-2,341	43,917	+/-4,424	19,064	+/-3,259
Ever married	1.6%	+/-0.5	1.3%	+/-0.5	2.9%	+/-2.3		N
Female with a birth in the past 12 months	3.2%	+/-0.9	1.6%	+/-0.6	11.3%	+/-5.5		N

Population 16 to 19 years	584,293	+/-11,589	465,363	+/-8,037	74,048	+/-6,066	29,600	+/-4,621
IDLENESS
Not enrolled in school and not in the labor force	4.4%	+/-0.9	3.3%	+/-0.8	10.2%	+/-4.5	9.9%	+/-5.0

LABOR FORCE STATUS
In the labor force	47.8%	+/-2.0	50.7%	+/-2.1	33.5%	+/-6.1	43.5%	+/-8.5

Source: U.S. Census Bureau, 2004 American Community Survey

Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see Accuracy of the Data). The effect of nonsampling error is not represented in these tables.

Explanation of Symbols:

1. An '*' entry in the margin of error column indicates that too few sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate.

2. An '**' entry in the margin of error column indicates that no sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate.

3. An '-' entry in the estimate column indicates that no sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest interval or upper interval of an open-ended distribution.

4. An '-' following a median estimate means the median falls in the lowest interval of an open-ended distribution.

5. An '+' following a median estimate means the median falls in the upper interval of an open-ended distribution.

6. An '***' entry in the margin of error column indicates that the median falls in the lowest interval or upper interval of an open-ended distribution. A statistical test is not appropriate.

7. An '*****' entry in the margin of error column indicates that the estimate is controlled. A statistical test for sampling variability is not appropriate.

8. An 'N' entry in the estimate and margin of error columns indicates that data for this geographic area cannot be displayed because the number of sample cases is too small.

9. An '(X)' means that the estimate is not applicable or not available.

Prepared By: The Pennsylvania State Data Center 02/1/2006