John Bird's poverty diagram shows how far removed the aspiration for welfare spending in 1948 is from today's reality.

Free body diagrams close free body diagramA simplified drawing of an object or system showing the forces acting on it. The forces are shown acting away from the centre of a box or dot. are used to ...

Six Sigma practitioners strive to find the root causes of defects quickly and accurately. One of the tools that provides a good initial view of the process Six Sigma is being used to optimize is SIPOC ...