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Zen's user avatar
Zen's user avatar
Zen's user avatar
Zen
  • Member for 12 years, 3 months
  • Last seen this week
  • São Paulo, Brazil
102 votes
Accepted

What is so cool about de Finetti's representation theorem?

80 votes
Accepted

Is a sample covariance matrix always symmetric and positive definite?

74 votes

Variance of a bounded random variable

54 votes

Can two random variables have the same distribution, yet be almost surely different?

53 votes

Why is the Jeffreys prior useful?

35 votes

How can I prove that the cumulative distribution function is right continuous?

33 votes

Why is sample standard deviation a biased estimator of $\sigma$?

32 votes

Size of a test and level of significance

32 votes
Accepted

Does the beta distribution have a conjugate prior?

31 votes
Accepted

Connection between Fisher metric and the relative entropy

31 votes
Accepted

Why is the Fisher Information matrix positive semidefinite?

31 votes

How to prove that the radial basis function is a kernel?

31 votes

Is it correct to use 'Ln' instead of 'ln' for natural logarithm?

24 votes
Accepted

Are bayesians slaves of the likelihood function?

22 votes

Prediction interval = credible interval?

21 votes
Accepted

Estimating Markov transition probabilities from sequence data

20 votes
Accepted

The sum of two independent gamma random variables

20 votes

Invariance property of MLE: what is the MLE of $\theta^2$ of normal, $\bar{X}^2$?

19 votes
Accepted

Efficient/fast Mahalanobis distance computation

19 votes
Accepted

Proof that joint probability density of independent random variables is equal to the product of marginal densities

18 votes

$P[X=x]=0$ when $X$ is a continuous variable

16 votes

Theoretical results behind Artificial Neural Networks

16 votes

Exponential of a standard normal random variable

16 votes

Sufficient statistics for layman

16 votes

Likelihood vs conditional distribution for Bayesian analysis

14 votes
Accepted

Mean residual life

14 votes
Accepted

Density of Y = log(X) for Gamma-distributed X

14 votes

What are some good references for the Metropolis-Hastings algorithm?

14 votes

Integrate with eCDF quickly in R

14 votes
Accepted

Why the sum of true positive and false positive does not have to be equal to one?

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