= Sobel Test = The '''Sobel test''' is a test for [[Statistics/MediationAnalysis|mediation]]. <> ---- == Description == The hypothesis is formulated such that the relationship between an independent and dependent variable is an '''indirect effect''' through a '''mediator variable'''. {{attachment:path.png}} In these pictured terms, the Sobel test statistic is calculated as: {{attachment:formula.svg}} The current practice is to instead use a bootstrapping method to estimate the variance of ''β,,2,,β,,3,,''. ---- CategoryRicottone