noun
Gaussian curve; bell curve
Technical term in probability and statistics; also called 正規分布曲線. The reading ガウスきょくせん is standard.
試験の得点分布はガウス曲線に近い形になった。
The distribution of exam scores approximated a Gaussian curve.
正規分布 is the normal distribution itself, while ガウス曲線 specifically refers to its bell-shaped graph.
From German 'Gauß' (Gauss) + 曲線 (curve). Named after mathematician Carl Friedrich Gauss.