試題詳解

40. A microecon onomist wants to detern to determine how corponte sa sales are intluenced by capital and wage spen ending by com mpanies. She proceeds to randomly select 26 large corporations and record infonnation in millions of dollars. A statistical analyst discovers that capital spending by corporations has a significant inverse relationship with wage spending. What should the microeconomist who developed this multiple regressian aodel be particularly concered with?
(A) Randoa bmness of' error terims
(B) Collinearity
(C) Normality of residuals
(D) Missing obscrvations
(E) None of the above.