(adsbygoogle = window.adsbygoogle || []).push({}); I have idea of physical signif of var(x),cov(x) but cant get derivations of equation.

Hi all,

I understood the facts that variance indicate the spread in random variable and covariance shows correlation between 2 r.v s etc. But I cannot imagine how we are arriving at their equations. Also what is the significance of nth moment etc?

TIA

-Devanand T

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# I have an idea of physical significance of var(x) , cov(x) but cant get equations.

Loading...

Similar Threads - idea physical significance | Date |
---|---|

I Robust linear estimation | Dec 26, 2016 |

Need help articulating an idea in rigorous language | Sep 8, 2012 |

Please give some idea for simplify the following proposition | Apr 1, 2012 |

Idea of adapted stochastic process doesn't make sense to me | Mar 2, 2012 |

Idea for a project (data set selection)! | Oct 30, 2011 |

**Physics Forums - The Fusion of Science and Community**