Viscosity measurements on a polymer are made every 10 minutes by an on-line viscometer. Thirty-six observations are
Question:
(a) Estimate the process standard deviation.
(b) Construct a tabular CUSUM for this process, using standardized values h= 8.01 and k = 0.25.
(c) Discuss the choice of h and k in part (b) of this problem on CUSUM performance.
Transcribed Image Text:
TABLE 9E.5 Polymer Viscosity 3,169 3,205 3,185 3,188 3,173 3203 3,187 3,183 3.162 3209 3.192 3.175 3.154 3,208 3.199 3.174 3.139 3,211 3.197 3,171 3,145 3.214 3.193 3.180 3,160 3,215 3.190 3,179 3.172 3,209 3.183 3.175 3.175 3.203 3.197 3,174
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Introduction to Statistical Quality Control
ISBN: 978-1118146811
7th edition
Authors: Douglas C Montgomery
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