Find frequency of each column in data.frame

Question

I have a data.frame as below, and i would like to find the frequency for each column.

data.frame ;

No      Location     Age         Size         Gender
1         


        

Answer 1

You can use table:

> t <- read.table(text="No      Location     Age         Size         Gender
+ 1        Trinidad     25          3              1
+ 2        Asin         33          2              2
+ 3        Trinidad     33          5              2
+ 4        Trinidad     23          3              1
+ 5        Asin         25          5              1
+ 6        Asin         23          2              2
+ 7        Trinidad     23          4              2",head=T)
> table(t$Location)

    Asin Trinidad 
       3        4 
> table(t$Age)

23 25 33 
 3  2  2 
> table(t$Size)

2 3 4 5 
2 2 1 2 
> table(t$Gender)

1 2 
3 4