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Variance - Wikipedia
In probability theory and statistics, variance is the expected value of the squared deviation from the mean of a random variable. The standard deviation (SD) is obtained as the square root of the variance. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value. It is the second central moment o… See more
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- nounvariance (noun) · variances (plural noun)
- the fact or quality of being different, divergent, or inconsistent:"her light tone was at variance with her sudden trembling"Similar:not in keepingout of keepingin disagreement
- the state or fact of disagreeing or quarreling:"they were at variance with all their previous allies"Similar:in conflictin disagreementpoles apartat outs
- lawa discrepancy between two statements or documents.
- lawan official dispensation from a rule or regulation, typically a building regulation.
- statisticsa quantity equal to the square of the standard deviation.
OriginMiddle English: via Old French from Latin variantia ‘difference’, from the verb variare (see vary). Variance Definition & Meaning - Merriam-Webster
The meaning of VARIANCE is the fact, quality, or state of being variable or variant : difference, variation. How to use variance in a sentence. Synonym Discussion of Variance.
Variance | Definition, Formula, Examples & Properties
Sep 20, 2024 · Variance is a measure of how data points differ from the mean of a set. Learn the formulas, types and properties of variance for population and sample data, and see solved examples and applications.
Variance is Statistics - Simple Definition, Formula, How to Calculate
Variance is a measure of how data points differ from the mean in probability and statistics. Learn how to calculate variance using a formula, properties and examples with Byju's Maths.
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How to Calculate Variance | Calculator, Analysis & Examples
Jan 18, 2023 · The variance is a measure of variability. It is calculated by taking the average of squared deviations from the mean. Variance tells you the degree of spread in your data set. …
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Variance
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean, and it informally measures how far a set of (random) numbers are spread out from their mean.https://en.wikipedia.org/wiki/VarianceCalculator
LoadingIn statistics, a sample is a set of data collected from a selected population by a defined procedure. Elements are known as sample points, sampling units, or observations.- x=
Variance: Definition, Step by Step Examples - Statistics How To
Variance measures the spread between numbers in a data set. It helps us determine how far each number in the set is from the mean or average, and from every other number in the set. It is …
Variance | Brilliant Math & Science Wiki
2 days ago · Variance is a statistic that measures how much a probability distribution deviates from its expected value. Learn how to calculate variance, its properties and how it relates to standard deviation and covariance.
Variance: Definition, Formulas & Calculations
Learn how to calculate and interpret variance, a measure of variability that assesses the average squared difference between data values and the mean. Compare the population and sample variance formulas and see examples of …
What Is Variance in Statistics? Definition, Formula, …
Sep 20, 2024 · Variance is a statistical measurement of how far each number in a data set is from the mean. It is used to assess risk, volatility, and market stability in finance and other fields. Learn how to calculate variance and its advantages …
Variance - Math.net
Variance is the average of the squared differences of a random variable from its mean. It is a statistical measurement of variability that indicates how far a set of numbers varies from the …
Donate - Khan Academy
Learn about range, variance, and standard deviation as measures of dispersion in statistics.
Variance | STAT 504 - Statistics Online
Variance is a measure of dispersion that tells how spread out a distribution is. Learn how to calculate variance for discrete and continuous random variables, and how it relates to …
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 …
Variance and Standard Deviation: Definition, Formula & Examples
Jul 29, 2024 · Learn how to calculate variance and standard deviation, the measures of how data points vary from the mean, with formulas and examples. Compare and contrast the properties, …
Variance | Definition based on the expected value - Statlect
Variance is a measure of dispersion that is equal to the average squared distance of a random variable from its expected value. Learn how to compute variance using the definition or the …
How to Calculate Variance | Calculator, Analysis & Examples
Jan 18, 2023 · Variance is a measure of variability that shows how spread out the data are from the mean. Learn how to calculate variance for population and sample data, and why it matters …
Variance - Definition, Symbol, Formula, Properties, and Examples
Jan 2, 2025 · ‘Variance’ refers to the spread or dispersion of a dataset in relation to its mean value. A lower variance means the data set is close to its mean, whereas a greater variance …
Variance - StatPearls - NCBI Bookshelf
The variance provides a quantitative measure of how closely the data set is spread around its center. [2] . A variance of smaller magnitude (closer to zero) implies that the set of numbers is …
4.5: Variance - Statistics LibreTexts
Oct 21, 2024 · Variance is a measure of how spread out the data are from the mean. It is the average of the squared deviations from the mean. Learn how to calculate variance and its …
What is Variance in Statistics? Easy Step-by-Step Guide
In statistics, variance is used to comprehend the correlation among numbers within a data collection, rather than employing more elaborate mathematical techniques, such as organizing …
Variance in Statistics: Definition, Formulas, and Applications
Jan 24, 2025 · Definition and Significance of Variance . Variance is a statistical measure used to analyze dispersion within a dataset, showing how its points are dispersed around its mean. …
2.5: Basic Concepts of Variation - Statistics LibreTexts
This statistic is called the sample variance and it is a measure of the average squared distance from the mean. If you now take the square root, you will get the average distance from the …
What is variance analysis? Definition, examples and formulas - BILL
Usage variance: Differences in the quantity of materials used versus the budget. Labor variance analysis. This form of variance analysis focuses on deviations in labor costs. This includes rate …
