R help - Jan 2012 - mode of frequency distribution table

In a frequency distribution table (bell shaped), how can we find the most
frequent range?
for example:

 x = c(1,2, 4,4,4,4, 5,5,5,6,6,5,5,5,5,5,6,6,6,13, 17,17,30,100,300)

barplot(table(x))


In the code above, which function do we use to find that the most
frequent value range from 4 to 6.

Thanks.



-- 
-------------
Mary Kindall
Yorktown Heights, NY
USA

	[[alternative HTML version deleted]]

Hi. You can do something like this:
#find the most frequent values of x
> t <- table(x)
> t[t==max(t)]
5
8
#sort table t based on frequencies
> t[order(as.numeric(t),decreasing = TRUE)]
x
  5   6   4  17   1   2  13  30 100 300
  8   5   4   2   1   1   1   1   1   1
#extract any range from sorted table
> t[order(as.numeric(t),decreasing = TRUE)][1:3]
x
5 6 4
8 5 4

I hope this helps.

Andrija


On Sun, Jan 8, 2012 at 1:48 PM, Mary Kindall <mary.kindall at gmail.com>
wrote:
> In a frequency distribution table (bell shaped), how can we find the most
> frequent range?
> for example:
>
> ?x = c(1,2, 4,4,4,4, 5,5,5,6,6,5,5,5,5,5,6,6,6,13, 17,17,30,100,300)
>
> barplot(table(x))
>
>
> In the code above, which function do we use to find that the most
> frequent value range from 4 to 6.
>
> Thanks.
>
>
>
> --
> -------------
> Mary Kindall
> Yorktown Heights, NY
> USA
>
> ? ? ? ?[[alternative HTML version deleted]]
>
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