What is a graphical means of quantitative comparison by rectangles with lengths proportional to the measure of the data or things compared?

A graphical means of quantitative comparison using rectangles is called a bar chart or bar graph. In this representation, the lengths of the rectangles (bars) are proportional to the values they represent, allowing for easy visual comparison of different categories or data points. Each bar's height or length correlates directly with the quantity, making it straightforward to assess differences at a glance.