Which of the Following Equations Is INCORRECT

question 23

Multiple Choice

Which of the following equations is INCORRECT?

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

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Definitions:

Algorithm

A step-by-step procedure for calculations, data processing, and automated reasoning tasks.

Representativeness Heuristic

A cognitive shortcut where people categorize situations or individuals based on how similar they are to typical cases or categories they know.

Prototypes

Original models or first forms from which subsequent forms are derived or developed; in psychology, widely accepted examples of a certain category.

Heuristic

A mental shortcut or rule of thumb that simplifies decision-making but may not always lead to optimal outcomes.