You are trying to determine whether participating in social activities ( measured by the number of hours per week ), suc

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You are trying to determine whether participating in social activities ( measured by the number of hours per week ), such as volunteering , etc. , reduces depression ( measured the number of sad days per month ). But you forgot to control for the number of chronic health conditions , such as, cancer , heart diseases , arthritis , etc. That is, number of health conditions is part of the error term . Would you expect coefficient for volunteering to be biased ? Discuss directionality of Bias . You must show your work . Depression_i=B0*B1*Volunteering_i+e_i