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Did you mean to ask: "What is standard deviation, and what are it's advantages and disadvantages" ? Standard deviation is a measure of how "spread out" a set of data is. - read more

Advantages & Disadvantages of Finding Variance. Most statistical methods deal with or include the concept of variance. Variance is the variability in certain traits in the population of interest. Throughout statistical textbooks, you will find the concept of variance and the concept ... - read more

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