[R] How to Compare the median to the mean?

chuck.01 CharlieTheBrown77 at gmail.com
Sat Feb 4 18:54:42 CET 2012


I found something a little different:
> median(nb10[,1])
[1] 404
> mean(nb10[,1])
[1] 404.59

compare them.... 
They are different.   Your sample is not perfectly symmetrical (50% above,
50% below) about the mean (ie. the third standardized moment (skewness) is
not zero).  This is really not a question about R, and this is not a place
to get answers for homework.
Good luck with your studies.   



Ajata Paul wrote
> 
> Okay, so I have a homework projecr for R, and we had to input the
> following link as some sort of data:
> nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10"). 
> Afterwards, we have to use 
> fivenum(nb10) to find max, min, quantiles, and sd, but I'm okay with this. 
> The next question is where I'm stuck.  The question is as follows;
> Compare the median (use the quantiles or median(nb10$V1)) to the mean.  I
> found the mean to be 408.8 and the median to be 404.  Can you please
> explain to me what I need to put into the program to get an answer and
> explain what the answer means?
> 
> Thank You.
> 


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