1. 1

    What does CUSUM mean in the CUSUM control chart?

  2. 2

    Why does the one-sided CUSUM chart have two lines plotted on it?

  3. 3

    If you were managing an automated process with a high level of common cause variation and therefore wide control limits, but your automation is susceptible to wear and tear which can be seen by a shift in the mean and you want to get an early indication of any long term shifts in the mean, what chart would you use?