has_specified_input has_specified_output achieves_planned_objective chi square test false positive rate number of degrees of freedom contingency table goodness of fit statistical test goodness of fit testing objective Chi-square probability distribution categorical variable Pearson's Chi square test of goodness of fit 2 Alejandra Gonzalez-Beltran Chi2 test for goodness of fit Orlaith Burke Pearson's Chi-Squared test for goodnes of fit is a statistical null hypothesis test which is used to either evaluate goodness of fit of dataset to a Chi-Squared distribution Philippe Rocca-Serra adapted from: http://stat.ethz.ch/R-manual/R-patched/library/stats/html/chisq.test.html and http://en.wikipedia.org/wiki/Pearson's_chi-squared_test http://stat.ethz.ch/R-manual/R-patched/library/stats/html/chisq.test.html chisq.test(x = NULL, correct = FALSE, p = rep(1/length(x), length(x)), rescale.p = FALSE, simulate.p.value = FALSE, B = 2000) p-value ready for release