Practicing Line graphs and line plots

A class measured $12$ pencils to the nearest quarter inch and made a line plot. The table shows the data.

Length (inches)	$4\frac{1}{2}$	$4\frac{3}{4}$	$5$	$5\frac{1}{4}$	$5\frac{1}{2}$
Number of pencils	$2$	$4$	$3$	$1$	$2$

How many pencils are shorter than $5$ inches?