decile

noun

1. Any of the values in a series that divides the distribution of individuals in that series into ten groups of equal frequency.

   “Although few people scored high marks, everyone did quite well—the lowest decile was over 50%.”

2. Any one of the ten subsets or groups so divided.

   “Our school is in the top decile for exam results.”

   “Overall, 79 percent of respondents said they ate fast food at least once during the three weeks. Breaking it down by income deciles (groups of 10 percent of aggregate household income) did not show big differences.”

   ““The incomes of the poorest decile fell by more than 20% compared to their incomes before the Covid outbreak,” it said in a statement at the time, pointing to other issues such as significant unemployment among those living in poverty.”

   “The report found that nearly 40% of workers in the third decile of earnings have high-AI exposure and low performance requirements.”

   ““The business cycle is always super depressing when we think about the different parts of the income distribution, because the lowest decile … in every single recession, they fall further and further behind,” said Tyler Schipper, an associate professor of economics and data analytics at the University of St. Thomas, in St. Paul, Minnesota.”

3. An aspect or position of two planets when they are distant from each other a tenth part of the zodiac.