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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 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 are spread out from their average value
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
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
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
Variance | Brilliant Math Science Wiki Variance is a statistic that is used to measure deviation in a probability distribution Deviation is the tendency of outcomes to differ from the expected value
3 Ways to Calculate Variance - wikiHow What is variance? Variance is a measure of how spread out a data set is, and we calculate it by finding the average of each data point's squared difference from the mean
What is Variance in Statistics? - Omni Calculator Variance is the degree of variability within a dataset In other words, it tells you how far the data points are from the mean, making it a measure of data variability A high variance means they are more spread out It essentially shows to what extent members of a group differ from one another