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Unformatted text preview: RELATED COMMANDS MEAN = Compute the mean of a variable. MEDIAN = Compute the median of a variable. STANDARD DEVIATION = Compute the standard deviation of a variable. VARIANCE = Compute the variance of a variable. WEIGHTED MEAN = Compute the weighted mean of a variable. WEIGHTED VARIANCE = Compute the weighted variance of a variable. APPLICATIONS Data Analysis IMPLEMENTATION DATE 94/11 (there was an error in the computation for earlier versions) s x i x ( 29 2 i 1 = N N 1 = sd w w i x i x w ( 29 2 i 1 = N N' 1 ( 29 w i i 1 = N N'= Statistics LET Subcommands WEIGHTED STANDARD DEVIATION DATAPLOT Reference Manual September 3, 1996 267 PROGRAM LET Y = DATA 2 3 5 7 11 13 17 19 23 LET W = DATA 1 1 0 0 4 1 2 1 0 LET A = STANDARD DEVIATION Y LET AW = WEIGHTED STANDARD DEVIATION Y W PRINT A AW The values of A and AW are 7.46 and 5.82 respectively....
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This note was uploaded on 10/30/2010 for the course MP 200 taught by Professor Guna during the Fall '10 term at Duke.
 Fall '10
 Guna

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