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Re: seeking one side control chart
lwquality  welcome to the Cove.
There are not control chart with one control limit (UCL or LCL), if the control rules is your concern, you only apply the ones that means something to your process, if capability is the problem, try the Jim's suggestion.
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Vits er thorf, theim vitha ratar; daelt er heima hvat; at augabragthi verthr, sá er ekki kann ok med snotrom sitr.
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