Consider the wastewater treatment problem of Examples 21.5 and 21.6 and live new pairs of measurements shown
Question:
Consider the wastewater treatment problem of Examples 21.5 and 21.6 and live new pairs of measurements shown below. Calculate the value of Hotelling?s T2 statistic for each pair using the information for Example 21.6, and plot the data on a T2 chart. Based on the number of chart violations for the new data, does it appear that the current process behavior is normal or abnormal?
Note; The requited covariance matrix S in Eq. 21-27 can be calculated using either the coy command in MATLAB or the covar command inEXCEL.
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The new data are plotted on a T 2 chart in figure A cha...View the full answer
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Related Book For 
Process Dynamics And Control
ISBN: 978-0471000778
2nd Edition
Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellich
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