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  • 44 votes cast
Nov
26
revised Probability of a sorted sequence
removed broken link
Nov
12
accepted How do I compute $\sum_{k=1}^{\infty} k \cdot p^k$
Nov
12
asked How do I compute $\sum_{k=1}^{\infty} k \cdot p^k$
Nov
12
asked Variance of discrete random variable
Nov
9
asked Variance of sample mean difference
Oct
23
awarded  Critic
Oct
18
accepted Am I correct in writing the chain rule for univariate functions this way?
Oct
18
asked Am I correct in writing the chain rule for univariate functions this way?
May
13
awarded  Notable Question
Sep
18
awarded  Popular Question
Jul
2
awarded  Curious
Oct
21
comment Interpolation of a logarithmic function
The task is just "find". And I may obviously interpolate and I may obviously min-square. But in the case of interpolation I only need two points, don't I?
Oct
21
asked Interpolation of a logarithmic function
Sep
9
revised Probability of a sorted sequence
added 230 characters in body
Sep
8
comment Probability of a sorted sequence
Great explanation, thanks!
Sep
8
accepted Probability of a sorted sequence
Sep
8
asked Probability of a sorted sequence
Sep
8
comment Fraction of ordered sequences among all sequences
Michael, brilliant result, thanks, though (sorry for bad problem formulation) not what I expected :) I have to think about that one - because I really presumed that $n$ is not a variable but a fixed number (and $k$ as well). Different elements means that the elements inside the sequence are different.
Sep
8
accepted Fraction of ordered sequences among all sequences
Sep
7
comment Array sort input
Yup, distinct. Assume $k > n$.