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DECILES FOR INCOME ITEMS
Income deciles are groupings that result from ranking either all households or all persons in the population in ascending order according to income, and then dividing the population into ten equal groups, each comprising approximately 10% of the estimated population. The first decile contains the bottom 10%, the second decile contains the next 10%, and the tenth decile contains the top 10%. Income which is not stated or not known is excluded from the calculation of deciles.
Household income deciles for all AHS publications and data files were calculated using household weighted data from the larger Core sample (that is, NHS and NNPAS samples) comprising approximately 25,000 households. Personal income deciles were calculated using person weighted data from only the NHS sample and is only available on the NHS data file.
The dollar amounts contained in each decile are shown in the following table:
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