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Statistical Concepts in Metrology_1

Trong các mảng không có hai khả năng có chính xác cùng một giá trị. Từ Định lý giới hạn trung tâm, nó có thể được suy luận rằng sẽ được khoảng bình thường được phân phối với aj / fl.: Độ lệch chuẩn. | Simpo PDF Merge and Split Unregistered Version - http www.simpopdf.com NBS Special Publication 747 Statistical Concepts in Metrology With a Postscript on Statistical Graphics Harry H. Ku Statistical Engineering Division Center for Computing and Applied Mathematics National Engineering Laboratory National Bureau of Standards Gaithersburg MD 20899 August 1988 U.S. Department of Commerce c. William Verity Secretary National Bureau of Standards Ernest Ambler Dữector Simpo PDF Merge and Split Unregistered Version - http www.simpopdf.com Library of Congress Catalog Card Number 88-600569 National Bureau of Standards Special Publication 747 Natl. Bur. Stand. U.S. Spec. Publ. 747 48 pages Aug. 1988 CODEN XNBSAV U.S. Government Printing Office Washington 1988 For sale by the Superintendent of Documents U.S. Government Printing Office Washington DC 20402 Simpo PDF Merge and Split Unregistered Version - http www.simpopdf.com Contents Statistical Concepts of a Measurement Process 1 Arithmetic Numbers and Measurement Numbers. 1 Computation and Reporting of Results. 2 Properties of Measurement Numbers. 3 The Limiting Mean. 3 Range Variance and Standard Deviation. 4 Population and the Frequency Curve. 4 The Normal Distribution. 6 Estimates of Population Characteristics. 8 Interpretation and Computation of Confidence Interval and Limits. 9 Precision and Accuracy. 11 Index of Precision. 11 Interpretation of Precision. 12 Accuracy. 13 Statistical Analysis of Measurement Data 13 Algebra for the Manipulation of Limiting Means and Variances. 14 Basic Formulas. 14 Propagation of Error Formulas. 16 Pooling Estimates of Variances. 18 Component of Variance Between Groups. 19 Comparison of Means and Variances. 20 Comparison of a Mean with a Standard Value. 20 Comparison Among Two or More Means. 21 Comparison of Variances or Ranges. 23 Control Charts Technique for Maintaining Stability and Precision. 24 Conttol Chart for Averages. 24 Control Chart for Standard Deviations. 25 Linear .