In it, they looked at the market from 1963 to 1990 and followed 10 portfolios formed by sorting stocks by beta each year and splitting the list into equal groups. (moneysense.ca)
The report used the index to divide parents into three equal groups of low, average and high parenting skills. (gov.scot)
We made equal groups by distributing the dividend, starting with the largest place value. (greatminds.org)