Week $3$: Data Progress Report Part $1$ Student Action: Make a data table that allows common cause

variation analysis to be performed, and perform that analysis. Produce a graph showing the actual monthly

results through time with the common cause variation range shown as limits on the graph. What do these

limits define relative to special cause $($post$-$intervention$)$ results? That is$,$ what amount of change or shift in

the monthly results would be required to attribute the change to special rather than common cause?

Provide your data table, completed graph and the answer to this question to your instructor. If you have

questions or concerns about this step, contact your instructor via email and discuss