Question: The expected possible outcomes for Roxy Stock are below. What is the expected return? What is the expected variance? What is the expected standard deviation?

The expected possible outcomes for Roxy Stock are below. What is the expected return? What is the expected variance? What is the expected standard deviation?

Outcome

Probability

Return

Recession

40%

-25%

Expansion

25%

20%

Boom

35%

45%

I'm having a hard time with what the formula is to get these totals. Would you please break this question down for me so I can better understand? Thanks!

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