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Nice Answer

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Mark L. Stone

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earned this badge 22 times.

Generate normally distributed random numbers with non positive-definite covariance matrix

Awarded Jul 25, 2022 at 18:36

Relation between Covariance matrix and Jacobian in Nonlinear Least Squares

Awarded Jul 8, 2022 at 16:16

Unbiased estimators of skewness and kurtosis

Awarded Mar 5, 2022 at 13:48

Mean of inverse exponential distribution

Awarded Mar 23, 2021 at 2:02

Is it meaningful to calculate standard deviation of two numbers?

Awarded Aug 21, 2018 at 12:35

Why use upper triangular Cholesky?

Awarded Aug 3, 2018 at 10:10

How does the L-BFGS work?

Awarded May 7, 2018 at 5:05

Free statistical textbooks

Awarded May 7, 2018 at 5:05

Why not use the "normal equations" to find simple least squares coefficients?

Awarded Apr 27, 2018 at 11:17

How to use the Cholesky decomposition, or an alternative, for correlated data simulation

Awarded Jan 15, 2018 at 0:44

Intuitive explanation for dividing by $n-1$ when calculating standard deviation?

Awarded Sep 15, 2017 at 13:18

1/2 on lagrangian equation from lasso

Awarded Sep 7, 2017 at 10:01

Distribution of $(X+a)^2$ where $X$ is a standard normal and $a$ is a constant

Awarded May 31, 2017 at 6:45

Why are optimization algorithms defined in terms of other optimization problems?

Awarded Jan 2, 2017 at 13:04

Do we need gradient descent to find the coefficients of a linear regression model?

Awarded Sep 2, 2016 at 7:52

Does there exist any univariate distribution that we can't sample from?

Awarded Aug 29, 2016 at 14:24

Expected value vs. most probable value (mode)

Awarded Aug 15, 2016 at 3:29

For i.i.d. random varianbles $X$, $Y$, can $X-Y$ be uniform [0,1]?

Awarded Aug 11, 2016 at 15:13

Are a sum and a product of two covariance matrices also a covariance matrix?

Awarded Jun 29, 2016 at 23:05

Is every correlation matrix positive definite?

Awarded May 25, 2016 at 17:56

How can I test a nonlinear vs a linear regression model?

Awarded Nov 12, 2015 at 3:13

Why is logistic regression called a machine learning algorithm?

Awarded Aug 26, 2015 at 12:52

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