183****78582026-05-21 14:36:54
183****7858我记得做过一道题，写的是in decimal形式，就必须要换算成小数形式算，但是这道题没有写in decimal，为啥还带上%算？
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Vincent2026-05-22 14:41:29
Vincent你好
题目没有写“in decimal”但答案依然用小数，是因为HHI标准定义本身就要求用小数的份额计算。
“The Herfindahl-Hirschman Index (HHI) is calculated as the sum of the squares of the market shares of the largest firms in the market. … Market shares can be expressed as decimals or percentages, but when using the HHI, it is standard to express market shares as decimals.”
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