Show that if the process is in control at the level µ, the exponentially weighted moving average is an unbiased estimator of the process mean.
Answer to relevant QuestionsDerive the variance of the exponentially weighted moving average zi. A Shewhart x chart has center line at 10 with UCL = 16 and LCL = 4. Suppose you wish to supplement this chart with an EWMA control chart using = 0.1 and the same control limit width in σ-units as employed on the x ...Reconsider the data in Exercise 9.4. Suppose the data there represent observations taken immediately after a process adjustment that was intended to reset the process to a target of µ0 = 8.00. Set up and apply an FIR CUSUM ...An x chart is to be designed for a quality characteristic assumed to be normal with a standard deviation of 4. Specifications on the product quality characteristics are 50 ± 20. The control chart is to be designed so that ...Consider the concentration data in Exercise 10.20. Construct a CUSUM chart on the residuals from the model you fit in part (c) of that exercise.
Post your question