(adsbygoogle = window.adsbygoogle || []).push({}); Define "variation" to a beginner

How do you define the word "variation" "variability" to a complete beginner, like myself.

For Example, I understand 'R' explains how strong the linear relationship between the change in X and Y. But sometimes, let's Say R=.91, people will say the linear trend model explains more than 91% of thevariationin sales.

Another Case is the Mean squared error (MSE) is a measure of variability in the forecast errors.

Hope someone can use 'SIMPLE' words to explain it to me.

Thanks a lot!

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

Dismiss Notice

Join Physics Forums Today!

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

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

# Define variation to a beginner

Loading...

Similar Threads - Define variation beginner | Date |
---|---|

A Defining the membership relation in set theory? | Sep 27, 2017 |

Correlation limits for binary variates | Feb 22, 2016 |

What defines probability | Jan 9, 2016 |

The limit of random variable is not defined | Nov 16, 2015 |

How to define a set without set builder notation | Apr 29, 2014 |

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