Transcription of STATISTICAL METHODS FOR QUALITY CONTROL
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STATISTICAL METHODS FOR QUALITY CONTROL
STATISTICAL METHODS FOR. QUALITY CONTROL . CONTENTS. STATISTICS IN PRACTICE: DOW CHEMICAL 1 STATISTICAL PROCESS CONTROL . CONTROL Charts x Chart: Process Mean and Standard Deviation Known x Chart: Process Mean and Standard Deviation Unknown R Chart p Chart np Chart Interpretation of CONTROL Charts 2 acceptance SAMPLING. KALI, Inc.: An Example of acceptance Sampling Computing the Probability of Accepting a Lot Selecting an acceptance Sampling Plan Multiple Sampling Plans ines bus s an tics for d econom tis ics sta Statistics in Practice DOW CHEMICAL *. FREEPORT, TEXAS. Dow Chemical , Texas Operations, began in 1940 In one application involving the operation of a drier, when The Dow Chemical Company purchased 800 acres samples of the output were taken at periodic intervals.
achieve a desired quality level. The second method, acceptance sampling, is used in situa-tions where a decision to accept or reject a group of items must be based on the quality found in a sample. 1 STATISTICAL PROCESS CONTROL In this section we consider quality control procedures for a production process whereby goods are manufactured ...
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