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In statistical quality control , the EWMA chart ( or exponentially-weighted moving average chart ) is a type of control chart used to monitor either variables or attributes-type data using the monitored business or industrial process 's entire history of output .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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