Copy of Control_Charts

# Copy of Control_Charts - Upper Control Limit = X-double bar...

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X-bar chart and R chart Making X-bar chart using sample ranges: Calculate x-bar (average) and range for each sample. sample 1: x-bar = sum of n values / n R = largest number in the sample minus smallest number in the sample Do similar calculations for each of the k samples. R-bar = average of k ranges calculated above Centerline for X-bar chart = X-double bar = average of the k sample averages calculated above
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Unformatted text preview: Upper Control Limit = X-double bar + A2 * R-bar A2 is a constant from Table Lower Control Limit = X-double bar - A2 * R-bar Look up table for sample size n Making R chart: Centerline for R chart = R-bar Upper Control Limit = D4 * R-bar D3 and D4 are constants from Table Lower Control Limit = D3 * R-bar Look up table for sample size n Take k samples of size n each....
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## This note was uploaded on 04/14/2009 for the course ISDS ISDS 361B taught by Professor Pgupta during the Spring '09 term at CSU Fullerton.

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