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 …

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. …

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 …

May 30, 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 …

Jun 2, 2025 · Variance is denoted by σ² and is the square of the standard deviation. Variance is important because it helps us understand the variability within a dataset. A high variance …

Deviation means how far from the normal. The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma) The formula is easy: it is the square …

Variance measures how far a data set is spread out. Definition, examples of variance. Step by step examples and videos; statistics made simple!

Variance is a measure of dispersion that is used to check the spread of numbers in a given set of observations with respect to the mean. Understand variance using solved 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 …