Introductory Chemometrics Control Chart Problem
Group work required; no collaboration between groups. Show
all work to receive credit
Use the data in the spreadsheet to generate
Shewhart mean, range and cumulative sum control charts for the assigned
station. You will need to group the raw data by date and calculate means
and ranges for each day.
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For the mean control chart
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Assume that the true value should be 1.0
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Use the data to calculate warning and control limits
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For the range control chart
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Use the average daily range from all the data to determine the target
range
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Use data to calculate warning and control limits
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For the cumulative sum chart
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Use a target value of 1.0
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Comment on whether the data appear to have a systematic bias