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Given that random variable $X$ is the sum of two independent fair dice, what is $E(4X^3 + 5)$ and $SD(4X^3 +5)$?

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#probability #solution-verification #expected-value #variance
503
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Verification of the variance of the hitting time of an asymmetric random walk

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#stochastic-processes #recurrence-relations #random-walk #variance #stopping-times
317
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Variance of sum of random variables with uniform distributions

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#probability #probability-distributions #uniform-distribution #variance
121
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Variance of Bernoulli random variable

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#probability #probability-distributions #variance
27
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Choices of $k$ for which $\operatorname{Var}(X-Y) \geq |\sigma_X-\sigma_Y|^k$ holds

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#probability #random-variables #variance
89
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Accuracy of estimation of the variance

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#statistics #variance
365
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Calculating the value of $\mu$ and $\sigma$ from a moment generating function.

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#probability #variance #means #moment-generating-functions
53
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Breakdown of variance of sums with covariance term

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#probability #variance #covariance
558
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Bias sample variance proof

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#statistics #variance
27
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SOLS estimator variance

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#systems-of-equations #variance #linear-regression
48
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Find $V[4X+2]$ for the given $f(x)$

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#probability #variance
69
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Calculation of variance

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#variance
99
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Variance of Quadratic form

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#statistics #expected-value #variance
55
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About a problem of mixed type: how does it arrive at the probability mass function?

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#probability #probability-distributions #expected-value #variance
64
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Compute the variance for x:

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#probability #statistics #discrete-mathematics #probability-distributions #variance

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