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b:head_first_statistics:measuring_central_tendency [2026/09/08 23:11] – [mean] hkimscilb:head_first_statistics:measuring_central_tendency [2026/09/08 23:24] (current) – [outlier] hkimscil
Line 56: Line 56:
 [{{eg.distribution.jpg}}] [{{eg.distribution.jpg}}]
 </WRAP> </WRAP>
 +<code>
 +> # mean 
 +> x <- c(19, 19, 20, 20, 20, 21)
 +> sx <- sum(x)
 +> nx <- length(x)
 +> sx/nx
 +[1] 19.83333
 +> mean(x)
 +[1] 19.83333
 +
 +> y <- c(3,19,20,21,34,37)
 +> mean(y)
 +[1] 22.33333
 +
 +> xy <- cbind(x, y)
 +> boxplot(xy, col=c("orange", "purple"),
 ++         names = c("x", "y"))
 +</code>
  
 +{{.:pasted:20260908-232337.png}}
 ===== skewedness ===== ===== skewedness =====
 see [[:b/head_first_statistics/visualization#histogram_skewedness]] see [[:b/head_first_statistics/visualization#histogram_skewedness]]
b/head_first_statistics/measuring_central_tendency.txt · Last modified: by hkimscil

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