Can take several forms including grouped, deviation, stacked, combination, or paired.

Bar charts can take several forms including grouped, deviation, stacked, combination or paired. 

A bar chart could be a chart that uses bars to indicate comparisons between classes of knowledge. The bars is either horizontal or vertical. Bar charts with vertical bars are typically referred to as vertical bar charts.

Not only is it the purchase of about 40% of america, it also grounds to on-go our advancement as a civilization.