Interview Question

Interview Dublin, Dublin (Ireland)

You have two games. Game A You toss one coin. Heads you win

  $1, Tails you lose $1. Game B: You toss two coins. Two Heads you win $2, two Tails you lose $2, a combination of both and you win or loss nothing. What is the Expected Value, Variance and Standard Deviation of both games? Which game would you prefer to play and why?
Answer

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