
this is the problem:
load this R data frame over the internet and save it to your hard drive.
http://rss.acs.unt.edu/Rdoc/library/twang/data/raceproling.RData

please show how to save a dataset of males only (the variable male=1) to a new dataframe. Then do the same thing for females (male=0). Then show how to recombine the two datasets to belike the original one except that the female observations come rst, then the male observations. This resultingdataset should be the same size as the original.
this is what i did so far:
# loading the R data frame over the internet
and saving it to your hard drive

 

>rp<-url("http://rss.acs.unt.edu/Rdoc/library/twang/data/raceprofiling.RData")

 

>load(rp)

 

>str(raceprofiling)

 

#this shows that in the RData file there are
5000 obs. of 10 variables.

 

# For
the fourth dataset, please show how to save a dataset of males only (the
variable male=1)

#to a new #data frame.

 

>attach(raceprofiling)

 

>s<-male[male==1]

 

>news<-data.frame(s)

 

#The same thing for females (male=0). 

 

>r<-male[male==0]

 

>newr<-data.frame(r)

now to merge:
I tried >merge(newr,news)
but this does not give the same observation as the original file. I also tried rbind, but this gives me error. Please help 		 	   		  
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