A bar graph shows data in columns, while a bar chart is a technical analysis tool that displays the open, high, low, and close prices for a particular security during a specific time period (such ...

William Playfair, the father of data visualisation, changed the way we understand information. His bar graphs, pie charts, and line graphs remain essential tools today, yet his name is barely known.

Shadow Treasurer Angus Taylor simplifies the employee living cost of Australians under Labor using a simple two-column bar graph. “I’m an old management consultant, I can’t help myself ...