Lecture10

Let a and b be constants then the following hold ex y

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Unformatted text preview: < ∞). Let a and b be constants. Then the following hold: E[X + Y ] = E[X ] + E[Y ] Random Variable (r.v.) E[aX + b] = a × E[X ] + b Expected Value Variance 10.5 Expected Value and Variance Example 31 revisited The following is a chart describing the number of siblings each student in a particular class has. Siblings (X ) 0 1 2 3 4 Total Frequency 8 17 11 3 1 40 Relative Frequency .200 .425 .275 .075 .025 1 Random Variable (r.v.) Expected Value Variance Find the expected value of the number of siblings Solut...
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This note was uploaded on 01/24/2014 for the course STAT 225 taught by Professor Martin during the Spring '08 term at Purdue.

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