List questions from means

Published on 25 Mar 2026 - 8:10

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What is the mean and variance of $1/X$ if $X$ is skew normal distributed?

Published on 09 Dec 2020 - 22:32

77

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Determine E(X) in terms of E(Y) and V(X) in terms of V(Y)

Published on 31 Mar 2026 - 4:56

44

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$\sigma_x^2 \leq \frac{R_x^2}{4}$

Published on 27 Mar 2026 - 17:34

297

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Variance of the empirical mean

Published on 15 Dec 2020 - 21:51

35

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Z-score in-sample vs out-of-sample

Published on 16 Dec 2020 - 8:16

453

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Proper notation of average with a subscript

Published on 17 Dec 2020 - 18:31

43

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are electric cars safer? Measuring an effect with increasing penetration

Published on 01 Apr 2026 - 10:32

315

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PDF - Probability density function

Published on 22 Dec 2020 - 18:30

1k

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More details on ratio of means vs. mean of ratios

Published on 01 Apr 2026 - 7:45

673

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Getting Standard Deviation of Population from s. d. of individual samples. Given mean and standard deviation of samples, with no access to data.

Published on 27 Dec 2020 - 8:35

124

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Average and Means

Published on 27 Dec 2020 - 11:36

179

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Which distance gives rise to the geometric mean?

Published on 26 Mar 2026 - 12:40

26

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Variance of a dynamical system

Published on 30 Dec 2020 - 15:33

62

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Expectation of random variable with differently weighted realizations

Published on 07 Jan 2021 - 4:05

List Question

What single estimator of a 5000 series of 20 elements for a non-normal distribution should be used?

What is the mean and variance of $1/X$ if $X$ is skew normal distributed?

Determine E(X) in terms of E(Y) and V(X) in terms of V(Y)

$\sigma_x^2 \leq \frac{R_x^2}{4}$

Variance of the empirical mean

Z-score in-sample vs out-of-sample

Proper notation of average with a subscript

are electric cars safer? Measuring an effect with increasing penetration

PDF - Probability density function

More details on ratio of means vs. mean of ratios

Getting Standard Deviation of Population from s. d. of individual samples. Given mean and standard deviation of samples, with no access to data.

Average and Means

Which distance gives rise to the geometric mean?

Variance of a dynamical system

Expectation of random variable with differently weighted realizations

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