The chi square distribution is a probability density function used in statistics to determine the probability that numerical differences in data are significant and real (as opposed to just being due to random errors or chance). Chi is a Greek letter...

A chi-square model is a statistical method used to analyze the results of certain types of experiments. It involves a comparison of the deviation of real observations from expected values, and helps determine whether a result is significant or not. It...

The distribution of chi-squared statistics where chi is the sum of the squares of the deviations of observations from their sample mean divided by the square of the standard deviation of the population from which the sample is taken. There are...

(χ2) A statistical test to determine how closely an observed set of data values corresponds to the values expected, under a specific...

cdf =\frac{\gamma(k/2,x/2)}{\Gamma(k/2)}\,| mean =k\,| median =approximately k-2/3\,| mode =k-2\, if k\geq 2\,| variance...