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variance    音标拼音: [v'ɛriəns]
n. 不一致,变化,变异,分歧,不和

不一致,变化,变异,分歧,不和

variance
变异数 方差

variance
n 1: an event that departs from expectations [synonym:
{discrepancy}, {variance}, {variant}]
2: discord that splits a group [synonym: {division}, {variance}]
3: the second moment around the mean; the expected value of the
square of the deviations of a random variable from its mean
value
4: a difference between conflicting facts or claims or opinions;
"a growing divergence of opinion" [synonym: {discrepancy},
{disagreement}, {divergence}, {variance}]
5: the quality of being subject to variation [synonym:
{variability}, {variableness}, {variance}] [ant:
{invariability}, {invariableness}, {invariance}]
6: an official dispensation to act contrary to a rule or
regulation (typically a building regulation); "a zoning
variance"
7: an activity that varies from a norm or standard; "any
variation in his routine was immediately reported" [synonym:
{variation}, {variance}]

Variance \Va"ri*ance\, n. [L. variantia.]
1. The quality or state of being variant; change of
condition; variation.
[1913 Webster]

2. Difference that produces dispute or controversy;
disagreement; dissension; discord; dispute; quarrel.
[1913 Webster]

That which is the strength of their amity shall
prove the immediate author of their variance.
--Shak.
[1913 Webster]

3. (Law) A disagreement or difference between two parts of
the same legal proceeding, which, to be effectual, ought
to agree, -- as between the writ and the declaration, or
between the allegation and the proof. --Bouvier.
[1913 Webster]

4. (Statistics) The expected value of the square of the
deviation from the mean of a randomly distributed
variable; the second moment about the mean. This is also
the square of the {standard deviation}.
[PJC]

{At variance}, in disagreement; in a state of dissension or
controversy; at enmity. "What cause brought him so soon at
variance with himself?" --Milton.
[1913 Webster]

107 Moby Thesaurus words for "variance":
agreement to disagree, alienation, antagonism, apostasy, argument,
argumentation, at variance, change, clashing, conflict, contention,
contradiction, contrariety, contrast, controversy, counter-culture,
cross-purposes, debate, departure, deviation, difference,
difference of opinion, difficulty, disaccord, disaccordance,
disagreement, disapprobation, disapproval, disconformity,
discongruity, discord, discordance, discordancy, discrepancy,
discreteness, disharmony, disparity, dispute, dissatisfaction,
dissension, dissent, dissentience, dissidence, dissimilarity,
dissonance, distinction, distinctness, disunion, disunity,
divergence, divergency, diversity, dividedness, division,
dropping out, faction, far cry, fluctuation, heterogeneity,
in disagreement, in dispute, inaccordance, incompatibility,
incongruity, inconsistency, inconsonance, inequality,
inharmoniousness, inharmony, irreconcilability, jarring,
minority opinion, misunderstanding, mixture, negation,
nonagreement, nonassent, nonconcurrence, nonconformity, nonconsent,
odds, opposition, oppugnancy, otherness, polarization, quarrel,
recusance, recusancy, rejection, repudiation, repugnance, rift,
schism, secession, separateness, separation, severing, strife,
unconformity, underground, unharmoniousness, unlikeness,
unorthodoxy, variation, variegation, variety, withdrawal

VARIANCE, pleading, evidence. A disagreement or difference between two parts
of the same legal proceeding, which ought to agree together. Variances are
between the writ and the declaration, and between the declaration and the
evidence.
2.-1. When the variance is a matter of substance, as if the writ sounds
in contract, and the other in tort, and e converso, or if the writ demands
one thing or subject, and the declaration another, advantage may be taken of
it, even in arrest of judgment; for it is the writ which gives authority to
the court to proceed in any given suit, and, therefore, the court can have
no authority to hear and determine a cause substantially different from that
in the writ. Hob. 279; Cro. Eliz. 722. But if the variance is in matter of
mere form, as in time or place, when that circumstance is immaterial,
advantage can only be taken of it by plea in abatement. Yelv. 120; Latch.
173; Bac. Ab. Abatement, I; Gould, Pl. c. 5, Sec. 98 1 Chit. Pl. 438.
3.-2. A variance by disagreement in some particular point or points
only between the allegation and the evidence, when upon a material point, is
as fatal to the party on whom the proof lies, as a total failure of
evidence. For example; the plaintiff declared in covenant for not repairing,
pursuant to the covenant in a lease, and stated the covenant, as a covenant
to "repair when and as need should require;" and issue was joined on a
traverse of the deed alleged. The plaintiff at the trial produced the deed
in proof, and it appeared that the covenant was to "repair when and as need
should require, and at farthest after notice:" the latter words having been
omitted in the declaration. This was held to be a variance, because the
additional words were material, and qualified the effect of the contract. 7
Taunt. 385. But a variance in mere form or in matter quite immaterial, will
not be regarded. Str. 690. Vide 1 Vin. Ab. 41; 12 Vin. Ab. 63; 21 Vin. Ab.
538 Com. Dig. Abatement, G 8, H 7; Id.; Amendment, D 7, 8, V 3: Bail, R 7;
Obligation, B 4; Pleader, C 14, 15, L 24, 30; Record, C, D, F; Phil. Ev.
Index, 11. t. Stark. Ev. Index, h.t., Roscoe's Ev. Index, h.t.; 18 E. C. L.
R. 139, 149, 153 1 Dougl. 194; 2 Salk. 659; Harr. Dig. h.t. Chit. Pl. Index,
h.t.; United States Dig. Pleading II, d and e; Bouv. Inst. Index: h.t.


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  • Variance - Wikipedia
    The red population has mean 100 and variance 100 (SD=10) while the blue population has mean 100 and variance 2500 (SD=50) where SD stands for Standard Deviation In probability theory and statistics, variance is the expected value of the squared deviation from the mean of a random variable
  • 方差_百度百科
    方差(variance)这个名词率先由罗纳德·费希尔(Ronald Fisher)在1918年发表的论文《孟德尔遗传假定下的亲缘之间的相关性》 (《The Correlation between Relatives on the Suppositionof Mendelian Inheritance》 [3])中提出。
  • 方差(variance)、标准差(Standard Deviation)、均方差、均方根值(RMS)、均方误差(MSE)、均方根误差(RMSE)
    方差 (variance):衡量随机变量或一组数据时离散程度的度量。 概率论 中方差用来度量随机变量和其数学期望(即均值)之间的偏离程度。
  • 偏差(Bias)与方差(Variance) - 知乎
    Bias和Variance分别从两个方面来描述我们学习到的模型与真实模型之间的差距。 Bias 是用 所有可能的训练数据集 训练出的 所有模型 的输出的 平均值 与 真实模型 的输出值之间的差异。 Variance 是 不同的训练数据集训练出的模型 输出值之间的差异。
  • Variance - GeeksforGeeks
    Variance is defined as the square of the standard deviation, i e , taking the square of the standard deviation for any group of data gives us the variance of that data set
  • Standard Deviation and Variance - Math is Fun
    Sample Variance = 108,520 4 = 27,130 Sample Standard Deviation = √27,130 = 165 (to the nearest mm)
  • How to Calculate Variance | Calculator, Analysis Examples
    The variance reflects the variability of your dataset by taking the average of squared deviations from the mean
  • 方差 - 维基百科,自由的百科全书
    變異數 (英語: variance)又稱 变异数[1] 、 變方[2],在 概率论 及 统计学 中,描述的是一个 随机变量 的离散程度,即一组数字与其平均值之间的距离的度量,是随机变量与其 总体 均值或样本均值的 离差 的平方的 期望值。
  • What Is Variance in Statistics? Definition, Formula, and Example
    Variance is a measurement of dispersion across a data set, comparing the difference between every other number in the set
  • 什么是方差-CSDN博客
    方差(Variance) 是 统计学 中的一个重要概念,用来度量一组数据的离散程度或分散程度。 具体来说,方差反映了数据点与其均值之间的偏离程度。





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