# Nicolás Kim

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bio website location Pittsburgh, PA age 21 member for 1 year, 9 months seen Apr 13 at 18:08 profile views 47

Ph.D. student in statistics

# 3 Questions

 30 Rain droplets falling on a table 17 Evaluating $\int\limits_0^\infty \! \frac{x^{1/n}}{1+x^2} \ \mathrm{d}x$ 2 Expected length of a game of Kings

# 370 Reputation

 +20 Evaluating $\int\limits_0^\infty \! \frac{x^{1/n}}{1+x^2} \ \mathrm{d}x$ +5 Expected length of a game of Kings +10 why is variance so famous that it appears in almost half of the probability textbook? +5 Rain droplets falling on a table

 1 why is variance so famous that it appears in almost half of the probability textbook? 0 Given that $X_i$ are symmetric about 0 and iid with $E[|X_i|]=\infty$. Show that $\frac{S_n}{n}=\frac{X_1+\dots+X_n}{n}$ does not converge to 0.

# 12 Tags

 1 probability × 3 0 probability-theory × 2 1 statistics 0 card-games 1 math-history 0 recreational-mathematics 0 calculus × 2 0 improper-integrals 0 integration × 2 0 complex-analysis

# 9 Accounts

 Mathematics 370 rep 312 MathOverflow 141 rep 2 Ask Different 128 rep 4 Ask Ubuntu 108 rep 3 Stack Overflow 101 rep 1