This gets you back to the starting point.
As you are doing this, hopefully you are able to reduce the variation in
the process, and also increase the capability score of your operation.
In this session, we saw how we can use the laws of statistics to permanently and
continuously test the hypothesis that a variation that we saw in the process
was an abnormal variation due to some assignable cause, or
whether it was just the normal way of doing business.
Control charts are a very powerful tool of keeping on top of your process.
Between you and me, let me confess that I'm even using a control chart
to map out my weight on every morning in the week.
Now one nice side benefit of the control chart is just tracking
the data in it by itself even if you don't use the control limit, but
just plotting the mean over time can be very motivational and very visual.
Oftentimes, really, just seeing that data, if you think about a diet, but
also about a factory performance, seeing that data is extremely powerful.
Now there are many other forms of control charts beyond the X bar charts
that we saw in this session.
However, I think with the intuition that you got in this session you have the basic
ideas behind this broader set of tools known as statistical process control.