... Moving Averagehttp://www.itl.nist.gov/div898/handbook/pmc/section4/pmc 422 .htm (2 of 2) [5/1 /20 06 10:35:08 AM]6. Process or Product Monitoring and Control 6.4. Introduction to Time Series Analysis6.4.3. ... ) [ yt -2 + (1- ) St -2 ] = yt-1 + (1- ) yt -2 + (1- ) 2 St -2 Summationformula forbasicequationBy substituting for St -2 , then for St-3, and so forth, until we reach S 2 (which ... Techniques?http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc 42. htm (3 of 4) [5/1 /20 06 10:35:07 AM]6. Process or Product Monitoring and Control 6.4. Introduction to Time Series Analysis6.4 .2. What are Moving Average or Smoothing...