Consider two discrete probability distributions with the same sample space and the same expected value. Are the standard deviations of the two distributions necessarily equal? Explain. No, the individual probabilities may differ in a way that produces the same expected value but a different standard deviation.Yes, because both distributions have the same sample space, they will have the same standard deviation as well.     No, the standard deviations of two different discrete probability distributions are never equal.Yes, because both distributions have the same expected value, they will have the same standard deviation as well.

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Asked Oct 13, 2019

Consider two discrete probability distributions with the same sample space and the same expected value. Are the standard deviations of the two distributions necessarily equal? Explain.

No, the individual probabilities may differ in a way that produces the same expected value but a different standard deviation.Yes, because both distributions have the same sample space, they will have the same standard deviation as well.     No, the standard deviations of two different discrete probability distributions are never equal.Yes, because both distributions have the same expected value, they will have the same standard deviation as well.
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No, the individual probabilities may differ in a way that produces the same expected value but a different stan...

Probability of f(x)
Probability of g(x)
X
1
0.1
0.4
0.2
2
0.8
0.4
0.1
2
2
mean
Standard 0.2
0.8
deviation
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Probability of f(x) Probability of g(x) X 1 0.1 0.4 0.2 2 0.8 0.4 0.1 2 2 mean Standard 0.2 0.8 deviation

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