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What is Variance and Standard Deviation Explained about?

The document discusses variance and standard deviation, which are measures of how spread out numbers are from the mean. Variance is the average of the squared deviations from the mean, while standard deviation is the square root of the variance. It provides steps to calculate both, including finding the mean, deviations, summing the squared deviations, and dividing by n-1. An example calculation is shown for a set of exam scores. The standard deviation indicates how closely the values cluster around the mea

Author

Irfan Khan

Language

EN