# Talk:Quantile function

WikiProject Statistics (Rated C-class, High-importance)

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I have started to add some material to this page, focusing on providing basic refs for the Normal and Student case. First additions done April 19 2007, with more to come - WSShaww 09:43, 19 April 2007 (UTC)

Added ref to Gilchrist book April 23, Shaww 09:41, 23 April 2007 (UTC)

Shouldn't this article mention somewhere that the integral of the quantile gives the expected value? —Preceding unsigned comment added by 142.161.241.193 (talk) 18:33, 24 October 2008 (UTC)

## Definition

In "All of Statistics" by Larry Wasserman (page 25), ${\displaystyle Q(p)}$ is defined as ${\displaystyle Q(p)\,=\,\inf \left\{x\in R:p for ${\displaystyle p\in [0,1]}$. The inequality is strict and ${\displaystyle p}$ can be equal to ${\displaystyle 0}$ or ${\displaystyle 1}$. Is it nevertheless correct ? — Preceding unsigned comment added by 90.46.252.14 (talk) 13:00, 24 February 2013 (UTC)

# Signum Function Example

To keep consistent notation with the Sign function article, use sgn(x) instead of sign(x). This would also alleviate the need to explain that the reader shouldn't confuse it with the sine function. — Preceding unsigned comment added by 165.130.136.208 (talk) 22:11, 6 May 2014 (UTC)

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