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anonymous
 5 years ago
How do you find the range, variance, and standard deviation of a set of data?
anonymous
 5 years ago
How do you find the range, variance, and standard deviation of a set of data?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The range of a set is the largest value of the set minus the smallest value of the set. The variance: Make N the mean of the set, the variance is then (X0 + N)^2 + (X1 + N)^2 + ... (Xn + N)^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so the rage should be one number, correct?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Standard deviation is the square root of the variance.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Suppose we have set of reals S = {0, 2, 75, 2} The range is 75 2 = 77

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Range is max value  min value \[Variance = \frac{\sum_{}^{}(X  x_{i})^{2}}{n1}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thanks! I'm still confused with variance

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Suppose we have set of reals S = {0, 2, 75, 2} The mean is S is (0 + 2 + 75  2) / 4 = 18.75 The variance is ((0 + 18.75)^2 + (2 + 18.75)^2 + (75 + 18.75)^2 + (18.75  2)^2) / (4  1)
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