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Unformatted text preview: x i 2 / n E[( X X ) 2 ] all c ( c X ) 2 f X ( c ) all x ( x X ) 2 f X ( x ) 5. (2 pts) For a discrete random variable X with mean X , the standard deviation is std( X ) = ddddddd i = 1 n x i 2 / n d [V( X )] E( X X ) E( X 2 ) 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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This note was uploaded on 04/25/2011 for the course IE 230 taught by Professor Xangi during the Spring '08 term at Purdue UniversityWest Lafayette.
 Spring '08
 Xangi

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