# Difference between revisions of "Talk:Variance"

From Encyclopedia of Mathematics

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m (mathematical expectation symbol?) |
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: Yes, $\operatorname{Var}X$, as noted in the "Comments". About $\xi$, $\zeta$ I am neutral; also $X$, $Y$ are OK with me. --[[User:Boris Tsirelson|Boris Tsirelson]] ([[User talk:Boris Tsirelson|talk]]) 08:55, 23 February 2013 (CET) | : Yes, $\operatorname{Var}X$, as noted in the "Comments". About $\xi$, $\zeta$ I am neutral; also $X$, $Y$ are OK with me. --[[User:Boris Tsirelson|Boris Tsirelson]] ([[User talk:Boris Tsirelson|talk]]) 08:55, 23 February 2013 (CET) | ||

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+ | What about mathematical expectation symbol? How should we type it? I found this $\mathbb{E}$ but I think is should be like E. --[[User:Nikita2|Nikita2]] ([[User talk:Nikita2|talk]]) 06:01, 25 February 2013 (CET) |

## Revision as of 07:01, 25 February 2013

Should it be $\operatorname{Var}X$ or $\operatorname{D}X$ ? Moreover I think that $\xi$, $\zeta$ is more appropriate for random variables then $X$, $Y$. What do you think? --Nikita2 (talk)

- Yes, $\operatorname{Var}X$, as noted in the "Comments". About $\xi$, $\zeta$ I am neutral; also $X$, $Y$ are OK with me. --Boris Tsirelson (talk) 08:55, 23 February 2013 (CET)

What about mathematical expectation symbol? How should we type it? I found this $\mathbb{E}$ but I think is should be like E. --Nikita2 (talk) 06:01, 25 February 2013 (CET)

**How to Cite This Entry:**

Variance.

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Variance&oldid=29483