Thank you chamilka. 

 

From: chamilka [via R] [mailto:ml-node+s789695n4636142h40@n4.nabble.com]

Sent: Wednesday, July 11, 2012 8:13 PM
To: Akkara, Antony (GE Energy, Non-GE)
Subject: Re: MODE , VARIANCE , NTH PERCENTAILE

 

Din't you try sapply function? 
I tried it for you. 
Just convert your matrix into a data frame using as.data.frame and then 
> rantony
     ABC PQR XYZ MNO 
[1,]   3   6   7  15 
[2,]   2  12  24  15 
[3,]  20   5   1   2 
[4,]  25  50  15  35 

> rantony=as.data.frame(rantony)

> sapply(rantony,var) #calculates column wise variance 
      ABC       PQR       XYZ       MNO 
137.66667 457.58333  99.58333 185.58333 

> sapply(rantony,Mode)  #calculates column vise Mode, where the mode
function is available in prettyR
<http://cran.r-project.org/web/packages/prettyR/index.html>  package 
      ABC       PQR       XYZ       MNO 
">1 mode" ">1 mode" ">1 mode"      "15" 
# the above means there are no modes in first three columns and in the
last column Mode is 15 
> sapply(rantony,quantile) 
       ABC   PQR   XYZ   MNO 
0%    2.00  5.00  1.00  2.00 
25%   2.75  5.75  5.50 11.75 
50%  11.50  9.00 11.00 15.00 
75%  21.25 21.50 17.25 20.00 
100% 25.00 50.00 24.00 35.00 

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