# Median income of families with children 0 to 17 in North Dakota

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**Definitions:**
This indicator represents the middle income point of the total number of families with children, including those with no income. The median is reflected in dollars and divides the number of families into two equal parts - half of families with children have incomes above the median and half have incomes below the median.

**Data Source:**
U.S. Census Bureau - 1990 Census, Summary Tape File 3, Table P19; Census 2000, Summary File 3 (SF3), Table PCT39; American Community Survey 5-Year Estimates, Table B19125.

**Footnotes:**
GEOGRAPHY - Data reflect the child’s place of residence. DATE - Census data reflect April 1 of reference year. The ACS data reflect a 5-year pooled estimate. That is, the estimate is the result of data being continuously collected nearly every day for five years. LIMITATIONS - Characteristics for geographic areas experiencing dynamic change due to things such as an environmental catastrophe (e.g., flood) or a plant closing will be mitigated since these estimates cover five calendar years of data. Caution is needed when using the multiyear estimates for estimating year-to-year change in a particular characteristic. This is because four of the five years in the 5-year estimate overlap with the next year’s estimate. Ideally, trend analysis with multiyear estimates should be done using estimates from non-overlapping periods (i.e., 2006-2010 and 2011-2015).

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 here 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 plus or minus the margin of error (the lower and upper confidence bounds) contains the true value. The larger the margin of error, the less confidence one should have that the reported results are close to the true value. Use caution when drawing conclusions based on small numbers, as smaller samples yield larger margins of error. Margins of error corresponding to a 90 percent confidence interval for each estimate can be found at Median income of families with children 0 to 17.