Guarantees a minimum wage of $8.25 per hour for workers 18 years of age and older; workers under 18 may be paid $.50 per hour less than the adult minimum wage. Credit for tips may not exceed 40% of the applicable minimum wage.
Predictor (common alternate for independent variable that softens the causal language. ) Carrier (mostly in the regression diagnostic literature) X variable (due to common notation) Covariate (strictly speaking this applies to variables that are observed not manipulated)
In the latter case, Z is called a confounding factor. In statistics, a confounding variable (also confounding factor, a confound, or confounder) is an extraneous variable in a statistical model that correlates (directly or inversely) with both the dependent variable and the independent variable.