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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
  • 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
  • What Is Variance in Statistics? Definition, Formula, and Example
    Variance is a statistical measurement of how large of a spread there is within a data set It measures how far each number in the set is from the mean (average), and thus from every other number
  • 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
  • Variance: Definition, Formulas Calculations - Statistics by Jim
    Variance is a measure of variability in statistics It assesses the average squared difference between data values and the mean Unlike some other statistical measures of variability, it incorporates all data points in its calculations by contrasting each value to the mean
  • Standard Deviation and Variance - Math is Fun
    To calculate the variance follow these steps: Then for each number: subtract the Mean and square the result (the squared difference) Then calculate the average of those squared differences (Why Square?) You and your friends have just measured the heights of your dogs (in millimeters):
  • Variance | STAT 504
    Variance is a measure of dispersion, telling us how “spread out” a distribution is For our simple random variable, the variance is V (X) = (1− 3 25) 2 ( 25) + (2 − 3 25) 2 ( 25) + (5 − 3 25) 2 ( 50) = 3 1875 A slightly easier way to calculate the variance is to use the well-known identity V (X) = E (X2) − (E (X) ) 2
  • Variance Calculator
    Variance is a measure of dispersion of data points from the mean Low variance indicates that data points are generally similar and do not vary widely from the mean High variance indicates that data values have greater variability and are more widely dispersed from the mean
  • How to Calculate Variance – mathsathome. com
    The larger the variance, the more spread a set of data is The variance is the square of the standard deviation The units of variance are the square of the units measured in the data set For example, if the data measured is in seconds, then the variance is measured in seconds squared
  • Variance - Definition, Formula, Examples, Properties - Cuemath
    Variance is a statistical measurement that is used to determine the spread of numbers in a data set with respect to the average value or the mean The standard deviation squared will give us the variance





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