Graphs are pictorial representations of numbers. Therefore, at the least, we should expect that the representation of the numbers be proportional to the numbers themselves. Unfortunately, this is not ...

A tweet directed me to an interesting article on world population. The author, Jonathan Good, asks the percentage of people who have ever lived that are alive today and then estimates the answer. The ...

A bar chart is a diagram that uses rows of horizontal or vertical bars to show information. The title tells you what the bar chart is about. The vertical and horizontal lines are called axes. The ...