Bar charts

Bar Charts

They are also called bar graphs. Is a graphical display of information using bars of different heights.

Horizontal and vertical bar charts

For example; imagine you just did a survey of your friends to find what kind of movie they liked best.

Favorite type of movie

Movie Type	Number of Friends
Action	4
Comedy	6
Romance	5
Drama	2

We can show that on a bar graph as here below:

Scale:

vertical scale: 1 cm represents 1 kind of movie

Horizontal scale: 1 cm represents 1 movie they watched.

In interpretation of Bar Chart in a recent math test students got the following grades: And this is a bar chart.

Scale:

vertical scale: 1 cm represents 1 grade

Horizontal scale: 1 cm represents 2 students