For the χ 2 distribution, the population mean is μ = df and the population standard deviation is σ = 2 ( d f ) The curve is nonsymmetrical and skewed to the right

There is a different chi-square curve for each df . The notation for the chi-square distribution is

population mean — μ = df and the population standard deviation is σ = 2 ( d f ). curve — nonsymmetrical and skewed to the right. Contingency Table — a table that displays sample values for two different factors that may be dependent or contingent on one another; it facilitates determining conditional probabilities. Goodness-of-Fit — a hypothesis test that compares expected and observed values in order to look for significant differences within one non-parametric variable. The degrees of freedom used equals….