Chi-square distribution introduction

Level: leicht
Khan Academy, 2011

Thema: Methoden
Format: Tutorial, Dauer: 00:10:23

The definition of a chi-square distribution is given. Chi-square is defined as the sum of random normally distributed variables (mean=0, variance=s.d.=1). The number of added squared variables is equal to the degrees of freedom. With more degrees of freedom the probability of larger chi-square values is increased.