Question

Which of the following is the formula for an expected value?

Multiple choice question.

Σ(xi-μ)2

Σ(xi-μ)2P(X=x)

σ2

ΣxiP(X=x)

Answer 1

[AI-generated answer — Bot GPT 3.5]

The formula for an expected value is:

Σ(xiP(X=x))

So the correct answer is:

ΣxiP(X=x)

Answer 2

[AI-generated answer — Step-by-Step Bot]

The formula for an expected value is given by ΣxiP(X=x), where xi represents the values and P(X=x) represents their associated probabilities.