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  1. 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 …

  2. What Is Variance in Statistics? Definition, Formula, and Example

    Jun 17, 2025 · 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 …

  3. Variance - GeeksforGeeks

    Jul 23, 2025 · Variance is a statistical measure that shows how much the values in a data set differ from the mean. It helps us understand the spread or dispersion of data points.

  4. 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. …

  5. 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 …

  6. 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.

  7. Standard Deviation and Variance - Math is Fun

    So now you ask, "What is the Variance?" The Variance is defined as: The average of the squared differences from the Mean. To calculate the variance follow these steps: Then for each …

  8. 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 …

  9. 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 …

  10. How to Calculate Variance – mathsathome.com

    Variance is a measurement of the variability or spread in a set of data. It is calculated as the average of the squared deviations from the mean. The larger the variance, the more spread a …