Which of the Following Equations Is INCORRECT

question 43

Multiple Choice

Which of the following equations is INCORRECT?

• A)Var(
• R)=
• B)SD(
• R)=
• C)Var(
• R)= P_R × (R - E[R])²
• D)E[R] = P_R × R

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Definitions:

Universal Generalization

Universal generalization is a logical principle that allows one to infer that something is true for all members of a class from its being true for every observed member.

Quantifier Negation

The process of negating the quantifier in a logical expression, changing its scope or applying negation to the predicate instead.

Existential Generalization

A logical inference saying that if something is true for at least one member of a class, then it can be generalized to the class.

Universal Instantiation

A logical rule of inference that allows for the substitution of specific individual instances for universally quantified variables within a statement.