The median income differs from the
national average salary or
GDP per capita due to the
income distribution. The median income is an
economic indicator of the
standard of living for the median person in a country. Median income growth correlates with
consumer confidence. In line with the
median voter theorem the median income growth is a
democratic indicator of
economic growth. The measurement of income from individuals and households, which is necessary to produce statistics such as the median, can pose challenges and can yield results inconsistent with aggregate national accounts data. For example, an academic study on the Census income data claims that when correcting for underreporting, U.S. median gross household income was 15% higher in 2010. == Median equivalised household disposable income ==