why would a person use a probability matching technique does the matching technique work for random sampling why use selection bias for matching is trend matching used for the treatment effect why is ps matching used is a matching technique used only for treatment effects? why is the matching technique useful is bias matching useful why would you use a matching technique for a treatment why match and test with a selection bias why is match only used for treatment why is the trend score matching technique used? why would a matched probability score be useful? why is it used as a technique when comparing a sample why is a correlational matching technique useful? when using probability score matching to compare two groupings within a sample why does propensity score match in ols what is the difference between matching and treatment is tendency score matching useful when comparing two groups why is the trend score method used