Question

Random variable X with mean $E(X)=7$ and $var(X)=6$. Calculate $E((X-a)^2)$?

score 141 · Answer 1 · 2026-05-10 18:43:04

141

Views

Random variable X with mean $E(X)=7$ and $var(X)=6$. Calculate $E((X-a)^2)$?

Published on 10 May 2026 - 18:43

score 86 · Answer 2 · 2026-04-12 22:33:15

86

Views

Variance of the sum of complex random variable

Published on 12 Apr 2026 - 22:33

score 3.4k · Answer 3 · 2026-05-10 12:39:27

3.4k

Views

How to simplify sum of $x_i Y_i$. where the sum of $x_i$ is a constant?

Published on 10 May 2026 - 12:39

score 105 · Answer 4 · 2026-04-10 09:55:02

105

Views

Double sum, how to proceed?

Published on 10 Apr 2026 - 9:55

score 69 · Answer 5 · 2026-04-14 19:59:02

69

Views

Mathematical Stats: Find the expectation and variance of a population if 40% are X and 60% are Y.

Published on 14 Apr 2026 - 19:59

score 18 · Answer 6 · 2026-04-14 08:05:25

18

Views

Variance Calculation for Var(a + (b^2)Y)

Published on 14 Apr 2026 - 8:05

score 189 · Answer 7 · 2026-04-16 03:10:21

189

Views

Moran process variance (discrete-time)

Published on 16 Apr 2026 - 3:10

score 89 · Answer 8 · 2026-04-14 20:37:19

89

Views

Variance of bottom card

Published on 14 Apr 2026 - 20:37

score 64 · Answer 9 · 2026-05-10 15:03:09

64

Views

$x_1, x_2, x_3, x_4,\ldots,x_k$ being random signs that are independent |-> $\operatorname{Var}(\sum_{k=1}^n b_k x_k) = \sum_{k=1}^n {b_k}^2$

Published on 10 May 2026 - 15:03

score 73 · Answer 10 · 2026-05-10 12:34:06

73

Views

Hint for computing the mean and variance of $\hat{\alpha} = - \frac{n}{\log \prod_{i=1}^n X_i }$

Published on 10 May 2026 - 12:34

score 1000 · Answer 11 · 2026-05-10 14:50:46

1000

Views

Calculation of variance beta hat

Published on 10 May 2026 - 14:50

score 2.2k · Answer 12 · 2026-05-10 16:11:32

2.2k

Views

Conditional Variance of the sum of two variables

Published on 10 May 2026 - 16:11

score 90 · Answer 13 · 2026-05-07 01:51:59

90

Views

Variance of Negative Binomial Distribution

Published on 07 May 2026 - 1:51

score 121 · Answer 14 · 2026-05-10 15:02:09

121

Views

Expected value of $[(x-\mu_x)^2 (y-\mu_y)^2]$?

Published on 10 May 2026 - 15:02

score 1.1k · Answer 15 · 2026-05-10 15:03:27

1.1k

Views

Prove VIF of jth predictor is jth diagonal entry of inverse of correlation matrix

Published on 10 May 2026 - 15:03

List Question

Random variable X with mean $E(X)=7$ and $var(X)=6$. Calculate $E((X-a)^2)$?

Variance of the sum of complex random variable

How to simplify sum of $x_i Y_i$. where the sum of $x_i$ is a constant?

Double sum, how to proceed?

Mathematical Stats: Find the expectation and variance of a population if 40% are X and 60% are Y.

Variance Calculation for Var(a + (b^2)Y)

Moran process variance (discrete-time)

Variance of bottom card

$x_1, x_2, x_3, x_4,\ldots,x_k$ being random signs that are independent |-> $\operatorname{Var}(\sum_{k=1}^n b_k x_k) = \sum_{k=1}^n {b_k}^2$

Hint for computing the mean and variance of $\hat{\alpha} = - \frac{n}{\log \prod_{i=1}^n X_i }$

Calculation of variance beta hat

Conditional Variance of the sum of two variables

Variance of Negative Binomial Distribution

Expected value of $[(x-\mu_x)^2 (y-\mu_y)^2]$?

Prove VIF of jth predictor is jth diagonal entry of inverse of correlation matrix

Trending Questions

Popular # Hahtags

Popular Questions