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Portable Network Graphic  |  1994-04-29  |  52KB  |  816x1056  |  8-bit (255 colors)
Labels: reckoner | sky
OCR: UWMA chart Each point uo - uniformly weighted moving average (UWMA) chart, also called moving average chart, the average of tlhemost recent subgroup means including the present subgroup mean. When you obtain new subgroup sample the next moving average com puted by dropping the oldest of the previousw subgroup means and including the newest subarou mean The constant Is called the span of the moving average There an inverse relationship betweenw and the magnitude the shift to be detecte This means that larger values ofw guard against smaller shifts Like all control charts, moving average charts update dynamically when yo add rows to the current data table themost subgrou detect