Thread: Something I've been thinking about
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Old 10-28-2007, 07:34 AM
Ratamahatta Ratamahatta is offline
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Default Re: Something I\'ve been thinking about
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8) if we lose, we win -1 . The deviation from the arithmetic mean is -0.5. The square deviation is -0.5*-0.5=0.25


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FYP

Edit: and the mean is 0 and I get variance = 1 if X={-1,1}.
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