Question: Explainwhyconditionalindependencebetween Y and X1, given X2, doesnotimplymarginal independencebetween Y and X1. Toillustratethis,sketchahypotheticalscatterplotbetween y and x1 valuesatdifferentvaluesof x2.

Explainwhyconditionalindependencebetween Y and X1, given X2, doesnotimplymarginal independencebetween Y and X1. Toillustratethis,sketchahypotheticalscatterplotbetween y and x1 valuesatdifferentvaluesof x2.

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