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variance 'vєәriәns

TOEFL GRE 柯林斯1⭐

释义

n. 不一致, 变化, 变异, 分歧, 不和
[化] 方差; 变种

英文释义

n. the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
n. an official dispensation to act contrary to a rule or regulation (typically a building regulation)

词形变化

复数: variances

BNC词频排名: 7,319 | 当代语料库词频排名: 5,027