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0 votes
1 answer
31 views

strange bound on correlation for symmetric pdf

I am puzzled by a rather simple fact: The correlation of a symmetric multivariate pdf seems to be bound from below (increasingly strong with the number of dimensions). That seems unlikely to me. But I ...
zufall's user avatar
  • 120
1 vote
3 answers
906 views

Is there a way to bound expected value with limited information of the CDF?

Suppose I want to evaluate $E[X]$, where $X$ is a univariate random variable and takes values in $\mathcal{X}$, where the smallest element of $\mathcal{X}$ is 0 and the largest element of $\mathcal{X}$...
user52932's user avatar
  • 403
1 vote
0 answers
396 views

Tight upper and lower bounds of the CDF of a summation of random variables

I have this random variable $$Y = \sum_{k=1}^KX_k$$ where $X_k$ are i.i.d. random variables with CDF and PDF $F_X(x)$ and $f_X(x)$, respectively. In my application, the CDF of $Y$ denoted by $F_Y(...
BlackMath's user avatar
  • 390