Table 3.

Comparison of the median household income ($) by U.S. Region.

Census Region		Mean Difference	95% Confidence Interval of Mean		Significance
			Lower Bound	Upper Bound
South Region	Midwest Region	−6,827.13	−21,226.88	7,572.62	0.571
	West Region	−56,699.88	−69,837.68	−43,562.09	0.0001
	Northeast Region	−32,492.43	−37,774.93	−27,209.93	0.0001
Midwest Region	South Region	6,827.13	−7,572.62	21,226.88	0.571
	West Region	−49,872.75	−68,646.47	−31,099.04	0.0001
	Northeast Region	−25,665.30	−40,585.62	−10,744.99	0.0001
West Region	South Region	56,699.88	43,562.09	69,837.68	0.0001
	Midwest Region	49,872.75	31,099.04	68,646.47	0.0001
	Northeast Region	24,207.45	10,449.21	37,965.69	0.0001
Northeast Region	South Region	32,492.43	27,209.93	37,774.93	0.0001
	Midwest Region	25,665.30	10,744.99	40,585.62	0.0001
	West Region	−24,207.45	−37,965.69	−10,449.21	0.0001