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

To remain competitive in the global marketplace, all countries must manufacture reliable products and develop reliable services that yield the minimum life-cycle cost to the user. This volume delivers ...

Sufficient replication within subpopulations is required to make the Pearson and deviance goodness-of-fit tests valid ... is distributed as chi-square when there is no replication in any of the ...

For one-way frequency tables, PROC FREQ performs a chi-square goodness-of-fit test when you specify the CHISQ option. The other chi-square tests and statistics described in this section are defined ...

The chi-square value is calculated using the following formula: Using this formula, the difference between the observed and expected frequencies is calculated for each experimental outcome category.