1
variance in sth
表示某方面存在差异或变化。
There is considerable variance in the test results.
测试结果存在显著差异。
差异，不一致，分歧
先理解核心含义，再看它在真实句子里的用法。
差异，不一致，分歧
the fact or quality of being different, divergent, or inconsistent
There is considerable variance in the test results.
测试结果存在显著差异。
变化的行为或可变的状态。
The act of varying or the state of being variable.
预期与实际观察之间的差异；偏差。
A difference between what is expected and what is observed; deviation.
分歧或冲突的状态。
The state of differing or being in conflict.
官方颁发的、允许做通常被规章禁止之事的许可证。
An official permit to do something that is ordinarily forbidden by regulations.
His account of the events was at variance with the official report.
他对事件的描述与官方报告不一致。
The variance of the data set was calculated to measure the spread of the values.
计算了数据集的方差以衡量数值的离散程度。
The city council granted a variance to allow the building to exceed the height limit.
市议会批准了一项特许，允许该建筑超过高度限制。
表示某方面存在差异或变化。
There is considerable variance in the test results.
测试结果存在显著差异。
表示两者之间的差异。
The variance between the two groups was statistically significant.
两组之间的差异具有统计学显著性。
统计学中表示方差。注意与日常用法的区别。
The variance of the data set was calculated using a formula.
该数据集的方差通过公式计算得出。
用于法律或规章语境，表示特许或豁免。
They obtained a variance from the building code.
他们获得了建筑法规的豁免。
Not this
There are many variances between the two theories.
Use this
There are many differences between the two theories.
当'variance'表示'差异、不一致'时，通常为不可数名词，而'differences'是可数名词，更自然。
Not this
The two reports are variance.
Use this
The two reports are at variance.
'variance'是名词，不能直接作表语；固定短语'at variance'表示'有分歧'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
与…不一致，与…有分歧
His actions are at variance with his promises.
他的行为与他的承诺不一致。
方差分析
The researcher used variance analysis to compare the groups.
研究者使用方差分析来比较各组。
遗传方差
Genetic variance contributes to the diversity of traits in a population.
遗传方差导致种群内性状的多样性。
样本方差
The sample variance is an estimate of the population variance.
样本方差是总体方差的估计值。
方差缩减
These techniques are used for variance reduction in Monte Carlo simulations.
这些技术用于蒙特卡洛模拟中的方差缩减。
解释方差
The model explains 70% of the variance in the data.
该模型解释了数据中70%的方差。
与……不一致；与……有分歧
His actions are at variance with his promises.
他的行为与他的承诺不一致。
Use variance naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想“vary”（变化）+“ance”（名词后缀），变化带来的差异就是方差。
统计学，数学，数据分析（正式术语）
All listed words share the same -ance ending pronounced /əns/, matching the ending of variance.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.