Which of the Following Equations Is INCORRECT

question 65

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) = w₁^2SD(R₁) + w₂^2SD(R₂) + 2w₁w₂Corr(R₁,R₂)SD(R₁)SD(R₂)
• C) Corr(R_i,R_j) =
• D) Cov(R_i,R_j) = E[(R_i - E[R_i])(R_j - E[R_j])]

---

Definitions:

Affluent Families

Households with considerable wealth and resources, which can significantly influence the social, educational, and emotional development of children within these families.

Giftedness

A term used to describe individuals, particularly children, who demonstrate exceptional natural abilities in one or more domains.

Less Happy

Describes a state of being where an individual feels lower levels of happiness compared to a previous state or to others.

Less Popular

Referring to something that does not enjoy widespread acclaim or favor among a general population or specific group.