ASTM E29 PDF

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within 72 hours in accordance with ASTM E “Standard Test Method for specification compliance in ASTM E “Standard Practice for Using. industry references The American Society for Testing Materials (ASTM) Standard. E, “Practice for Using Significant Digits in Test Data to Determine. ASME中国制造-ASTM E (原文)_化学_自然科学_专业资料。Designation: E29? 13 An American National Standard Standard Practice for.

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ASTM E29 – 13

Current edition approved Aug. NOTE 2—Using a calculation subroutine that has been programmed to perform the rounding procedure described in 6. This practice is intended to assist the various technical committees in the use of uniform methods of indicating the number of digits which are to be considered significant in specification limits, for example, specified maximum values and specified minimum values. Table 1 gives examples of applying this rounding procedure. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Work Item s – proposed revisions of this standard. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

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Guidelines for Retaining Signi? Its aim is to outline methods which should aid in clarifying the intended meaning of speci? The choice of method depends upon the current practice of the particular branch of industry or technology concerned, and should therefore be speci? It should not be inferred that a measurement value is precise to the number of signi?

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Historical Version s – view previous versions of standard. The following guidelines are intended to preserve the data for statistical summaries.

That is, the rounding unit for the speci? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The conversion constant, Any approach to retention of signi?

The suggested rule would report x? Analyses on six specimens give values of 3. Last previous edition approved in as E29 — The examples are not binding on products or test methods treated. When the number of observations is large more than 15 8.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Digits of ln x or log10 x are signi? For certain purposes, such as where calculations asmt differences of measurements close in magnitude, and for some statistical calculations, such as paired t-tests, autocorrelations, and nonparametric tests, reporting data to a greater number of signi?

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Reporting s to within 0.

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The average and standard deviation, unrounded, are x? The following applies to speci?

The rounding interval for test results should not be greater than 0. This will be referred to as the absolute method, which is discussed in Section 5. Rounding this value to the nearest whole number gives a value of 4, based on the information in 6.

Round test results to the place of the? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. For example, the numbers When rounding a number to one having a speci?

This will be referred to as the rounding method,which is discussed in Section 6. The standard deviation of the test method is estimated to be, 0. The Modern Metric System 3.