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- | ====== Numerically Stable and Unstable Methods to Compute the Variance ====== | + | ====== Lab 8: Numerically Stable and Unstable Methods to Compute the Variance ====== |

The variance of n sample values \(x_1\), \(x_2\), ... , \(x_n\) is one measure of statistical dispersion, obtained by averaging the squared distance of the sample values from the expected value (mean). The mean captures the location of a distribution and the variance captures the degree of the values being spread out. The square root of the variance is called the standard deviation. | The variance of n sample values \(x_1\), \(x_2\), ... , \(x_n\) is one measure of statistical dispersion, obtained by averaging the squared distance of the sample values from the expected value (mean). The mean captures the location of a distribution and the variance captures the degree of the values being spread out. The square root of the variance is called the standard deviation. |