user avatar
user avatar
user avatar
Dilip Sarwate
  • Member for 10 years, 7 months
  • Last seen this week
  • Urbana, IL
139 votes

Why is Euclidean distance not a good metric in high dimensions?

77 votes

How can I calculate $\int^{\infty}_{-\infty}\Phi\left(\frac{w-a}{b}\right)\phi(w)\,\mathrm dw$

71 votes
Accepted

Why does the correlation coefficient between X and X-Y random variables tend to be 0.7

55 votes

Variance of product of multiple independent random variables

52 votes

How can I prove mathematically that the mean of a distribution is the measure that minimizes the variance?

49 votes

Why does correlation matrix need to be positive semi-definite and what does it mean to be or not to be positive semi-definite?

47 votes

Brain teaser: How to generate 7 integers with equal probability using a biased coin that has a pr(head) = p?

46 votes
Accepted

Why is P(A,B|C)/P(B|C) = P(A|B,C)?

46 votes

Why does the Cauchy distribution have no mean?

44 votes

Does the reciprocal of a probability represent anything?

44 votes
Accepted

Covariance of a random vector after a linear transformation

41 votes

Bound for the correlation of three random variables

36 votes
Accepted

What is the distribution of the sum of non i.i.d. gaussian variates?

31 votes
Accepted

difference between conditional probability and bayes rule

29 votes

What are i.i.d. random variables?

28 votes
Accepted

Effect of switching response and explanatory variable in simple linear regression

28 votes

A generalization of the Law of Iterated Expectations

26 votes
Accepted

Does Bayes theorem hold for expectations?

26 votes

Distribution of difference between two normal distributions

26 votes
Accepted

Fourier transform of distributions

26 votes
Accepted

If random variables are drawn from an identical distribution, why doesn't this guarantee they are independent?

23 votes
Accepted

Distribution of ratio between two independent uniform random variables

23 votes
Accepted

Difference of Gamma random variables

22 votes
Accepted

Variance of linear combinations of correlated random variables

22 votes

If $X$ and $Y$ are normally distributed random variables, what kind of distribution their sum follows?

22 votes
Accepted

One sided Chebyshev inequality for higher moment

21 votes

How to get the derivative of a normal distribution w.r.t its parameters?

21 votes

Famous statistical quotations

20 votes

Expected Value of Quadratic Form

20 votes
Accepted

What is a second order stationary process?

1
2 3 4 5
23