Excel offers a wide variety of charts and graphs, each designed to help you uniquely visualize data. But choosing the right chart isnt always straightforward. Let's break down the essential Excel ...

2 types of variation and how we distinguish between common and special cause variation, along with how to create a rational subgroup. We also cover the equations and constants for the X-bar and R ...

Literature about graphs includes many discussions about whether zero needs to be included on all scales. We demonstrate that a graph designer can mislead just as much by changing the aspect ratio ...

It is possible to classify the types of causal relationships that can give rise to effect modification on the risk difference scale by expressing the conditional causal risk-difference as a sum of ...