Apparently, this user prefers to keep an air of mystery about them.
3 Confusion about covariance Sep 24 '12
2 If $P(x) = ax^2 + bx + c$ and $Q(x) = -ax^2 + dx + c$, then prove that $P(x) \cdot Q(x) = 0$ has at least two real roots? May 28 '14
1 Calculating Variance of a binomial distribution using the standard formula $E(X^2) - \mu^2$ Oct 17 '12
1 Poisson Distribution for Consecutive Figures Nov 7 '12
1 Can two functions have identical first and second derivatives, but different higher order derivatives? Jul 22 '11
1 Product of standard deviations Sep 2 '12
1 Adjusting mean and standard deviation Sep 3 '12