Re: [R] boxplots

From: Michael Kubovy <kubovy_at_virginia.edu>
Date: Wed, 30 Apr 2008 00:22:15 -0400

?boxplot

The boxplot does not show the mean but the median: median(c(0,15,0,60,0,0,0,0,0,60,60,0,60,0,30,0))

 > b <- boxplot(c(0,15,0,60,0,0,0,0,0,60,60,0,60,0,30,0))

b$stats

      [,1]

[1,]    0
[2,]    0
[3,]    0
[4,]   45
[5,]   60

_____________________________

Professor Michael Kubovy
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Department of Psychology
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On Apr 29, 2008, at 11:08 PM, Georg Ehret wrote:

> Dear R user group,
> I am working with boxplots and cannot solve the following problem:
>
>> data<-c(0,15,0,60,0,0,0,0,0,60,60,0,60,0,30,0)
>> data
> [1] 0 15 0 60 0 0 0 0 0 60 60 0 60 0 30 0
>> boxplot(data)
>
>
> The boxplot has the first hinge and the mean-bar both at 0... Why is
> this
> the mean is clearly >0!
> Thanking you and wishing you an excellent day,
> Georg.
> ***************************
> Georg Ehret
> Johns Hopkins University
> Baltimore, US

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