A statistical test that allows one to determine whether observed quantities of a specific characteristic differed from the expected value purely by chance.

Sufficient replication within subpopulations is required to make the Pearson and deviance goodness ... sparse to use these statistics. Hosmer and Lemeshow (1989) proposed a statistic that they show, ...

A weakness of the chi-square goodness-of-fit test is its dependence on the choice of histogram ... The following statements refit the lognormal distribution using default midpoints (0.3 to 1.8 by 0.3) ...