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Measures of Variation - Range, Variance, Standard Deviation, Chebyshev’s Theorem and Empirical Rule
Автор: Charles Edeki -- Math Computer Science Programming
Загружено: 2020-05-22
Просмотров: 620
Описание:
While range is about how much your data covers, standard deviation has to do more with how much difference there is between the scores. If all of the scores are grouped around the average, then your standard deviation will be lower.
The Empirical Rule is an approximation that applies only to data sets with a bell-shaped relative frequency histogram. Chebyshev's Theorem is a fact that applies to all possible data sets. It describes the minimum proportion of the measurements that lie must within one, two, or more standard deviations of the mean.
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