Example Quality Assurance / Quality Control Plan

7.3.3 Data Reduction and Analysis. 1. Obtain CGA Audit Data Form and enter data from the DAHS calibration report. 2. Calculate the percent difference (% diff) for each value as follows: % diff = (average reading - known concentration) / known concentration x 100. 3. Verify that the % diff does not exceed 15% ( or applicable limit) for any data ... ................
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