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decile Syllabification: dec·ile
Pronunciation: /ˈdeˌsīl/

Definition of decile in English:


1Each of ten equal groups into which a population can be divided according to the distribution of values of a particular variable: the lowest income decile of the population
More example sentences
  • In one study based on U.S. data, for example, people in the top decile of the income distribution averaged more than five points higher on a ten-point happiness scale than people in the bottom decile.
  • The bottom deciles all lost real income between 1982 and 1998.
  • Individuals who were in the lowest part of the income distribution for more than a decade face gasoline tax burdens nearly twice as high as the burden placed on the top decile of income.
1.1Each of the nine values of the random variable that divide a population into ten such groups.
Example sentences
  • Nine intervals, rather than deciles, were selected so that the expected mean value would be contained in a single central interval.


Late 17th century: from French décile, from a medieval Latin derivative of Latin decem 'ten'.

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