Unformatted text preview: x i 2 / n E[( X − μ X ) 2 ] Σ all c ( c −μ X ) 2 f X ( c ) Σ all x ( x −μ X ) 2 f X ( x ) 5. (2 pts) For a discrete random variable X with mean μ X , the standard deviation is std( X ) = √ ddddddd Σ i = 1 n x i 2 / n √ d [V( X )] E( X −μ X ) E( X 2 ) − μ X 2 ______________________________________________________________________ Write on the back any concerns about the weekly quizzes or the course in general. IE 230 – Page 1 of 1 – Schmeiser...
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 Spring '08
 Xangi
 Probability theory, pts, Cumulative distribution function, Probability mass function, mean µX

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