I have this series of data

mobiles owned

1 1 2 2 2 2 1 1 1 3 1 1 2 2

and I have to provide a graphical representation. I know it's stupid but I did simply a graph with vertical bar for 1, it is long 7; for 2, the bar i slong 6, and for 3 just 1.

Should I have done a class representation? Like 0<x<1 2<x<3. Or did I do right?

Thank you for your patience.