Title 21: Food and Drugs
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/ PART 820 - QUALITY SYSTEM REGULATION
/ Subpart O - Statistical Techniques / § 820.250 Statistical techniques.
§ 820.250 Statistical techniques.
(a) Where appropriate, each manufacturer shall establish and maintain procedures for identifying valid statistical techniques required for establishing, controlling, and verifying the acceptability of process capability and product characteristics.
(b) Sampling plans, when used, shall be written and based on a valid statistical rationale. Each manufacturer shall establish and maintain procedures to ensure that sampling methods are adequate for their intended use and to ensure that when changes occur the sampling plans are reviewed. These activities shall be documented.