Degrees Of Freedom — Why it is n-1 ?

P.S. Contingency Table: In statistics, a contingency table (also known as a cross tabulation or cross-tab, Pivot table that we use in Excel) is a type of table in a matrix format that displays the (multivariate) frequency distribution of the variables.


Degrees of freedom of a data set is n — k, whereas n — Size of data set & k — Number of constraints placed.

As the constraints increase, freedom is reduced.

If there is more than one variable are combined into a matrix, then the entire degrees of freedom is the product of degrees of freedom of each variable.


Data Science & Machine Learning Enthusiast | Software Developer | Blogger | |

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store