Which of the Following Equations Is INCORRECT

question 29

Multiple Choice

Which of the following equations is INCORRECT?

• A)Cov(R_i,R_j)= Σ(R_i - R_i)(R_j - R_j)
• B)Var(R_p)= x₁^2Var(R₁)+ x₂^2Var(R₂)+ 2X₁X₂Cov(R₁,R₂)
• C)Corr(R_i,R_j)=
• D)Cov(R_i,R_j)= E[(R_i - E[R_i])(R_j - E[R_j])]

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