A researcher wants to determine the causal relationship among number of family members who are at least high school graduate (W), number of working family members (X), monthly gross income (Y), monthly expenditure (Z), and average monthly bank deposits (A). A random sample of 20 families was selected and the data on the variables were collected. Consider the following path diagram:  Identify the exogenous and endogenous variables.  Exogenous: ______________________________________________________    Endogenous: _______________________________

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