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math:variance [2019/04/30 11:02] superuser |
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| Стандартное отклонение - это корень из дисперсии. Следовательно, формула такая же как для стандартного отклонения, но без корня. | Стандартное отклонение - это корень из дисперсии. Следовательно, формула такая же как для стандартного отклонения, но без корня. | ||
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| To calculate variance, you calculate the mean (add up all the values and divide by the number of values). Then you loop through the values and calculate the square of the difference between each value and the mean. You average those squared differences and that’s the variance. | To calculate variance, you calculate the mean (add up all the values and divide by the number of values). Then you loop through the values and calculate the square of the difference between each value and the mean. You average those squared differences and that’s the variance. | ||