Key Points A cause-and-effect diagram is a visual tool for organizing possible causes of a problem. It allows users to determine if there are relationships between potential causes. It does not ...

Schematic symbol preferences are very personal, but it is important to make them understandable. How do your drawings compare to this engineer's guidelines?

Solving problems using Venn diagrams You may be asked to solve problems using Venn diagrams in an exam. It is really important you draw the Venn diagram and add information as you go along.