It is very common for people supervising a process to try to adjust inputs or operating conditions to compensate for an unusual (and most often undesirable) result. If the process is stationary and on target, such "process tampering" will almost always make the process worse by increasing process variation, by making the process nonstationary, or by doing both.
In this lab, you will use tools and concepts you have learned in chapters 1 and 2 to explore what happens when a stationary process is tampered with.
In this lab you will try to control the aim of a cannon by adjusting (or not adjusting) where the cannon is aimed after observing where each shot lands. You will evaluate the performance of four different adjustment strategies. The lab will illustrate issues of process stationarity and control.