vigintile

plural vigintiles

1. mathematicsAny of the values in a series that divides the distribution of individuals in that series into twenty groups of equal frequency.
2. Any one of the twenty groups so divided.

   We categorised income into vigintiles by sex and cohort. […] In addition, we estimated the absolute income level of each vigintile by adjusting for inflation using the consumer price index with 2020 as the index year, and by calculating the within-vigintile mean income.

   2024 April 16, Klara Gurzo et al., “One generation apart: Individual income and life expectancy in two Swedish cohorts born before and after the expansion of the welfare state”, in Scandinavian Journal of Public Health, volume 53, number 4, →DOI, archived from the original on 30 Jan 2026

   1 more example

   Chart 4 examines the changes in vigintile ( 1/20th or 5% ) for the SIMD and the domains between the 2006 and 2009 SIMD publications. Vigintiles are bands of 5%, ie vigintile 1 is the 5% most deprived and combining the first three vigintiles is the 15% most deprived datazones in Scotland. […] No datazone had a decrease in the vigintile category for either income or employment domain. The income domain had one datazone remaining in the same category, three datazones increasing by one vigintile category and one datazone increasing by two vigintiles.

   2009 November 28, “Scottish Index of Multiple Deprivation”, in Dundee City Council, archived from the original on 16 Mar 2024, pages 4-5