noun which may take the genitive case particle 'no'
Technical term used in statistics, data analysis, and related fields to describe a distribution with two peaks.
このデータは二峰性の分布を示している。
This data shows a bimodal distribution.
多峰性 means 'multimodal', having multiple peaks, whereas 二峰性 specifically refers to exactly two peaks.
Compound of 二 (two), 峰 (peak), and 性 (nature/characteristic). The term is a direct calque of the English 'bimodal'.