Active, Most Current. Prices subject to change without notice. About Us. Contact Us.
|Published (Last):||17 July 2009|
|PDF File Size:||5.54 Mb|
|ePub File Size:||3.35 Mb|
|Price:||Free* [*Free Regsitration Required]|
Active view current version of standard. Other Historical Standards. More E An outlying observation, or "outlier," is one that appears to deviate markedly from other members of the sample in which it occurs. In this connection, the following two alternatives are of interest:.
If this is true, the value should be retained and processed in the same manner as the other observations in the sample. In such cases, it may be desirable to institute an investigation to ascertain the reason for the aberrant value. The observation may even actually be rejected as a result of the investigation, though not necessarily so. At any rate, in subsequent data analysis the outlier or outliers will be recognized as probably being from a different population than that of the other sample values.
The procedures covered herein apply primarily to the simplest kind of experimental data, that is, replicate measurements of some property of a given material, or observations in a supposedly single random sample. Nevertheless, the tests suggested do cover a wide enough range of cases in practice to have broad utility. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Scope 1. In this connection, the following two alternatives are of interest: 1. Link to Active This link will always route to the current Active version of the standard.
ASTM E178 -2008 - Standard Practice for Dealing With Outlying Observations.pdf
Dimensional quantities in the standard are presented only as illustrations of calculation methods. The examples are not binding on products or test methods treated. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. Learn more about the cookies we use and how to change your settings. Online Tools.
Standard Practice for Dealing With Outlying Observations1 This standard is issued under the fixed designation E; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Scope 2. Referenced Documents 1. Terminology this connection, the following two alternatives are of interest: 3. Significance and Use In such cases, it may be desirable to institute an investigation 4. The observation deviation from prescribed experimental procedure has taken may even actually be rejected as a result of the investigation, place, the resultant observation should be discarded, whether or though not necessarily so.
ASTM E178 - 16A
Historical Version s - view previous versions of standard. More E This practice covers outlying observations in samples and how to test the statistical significance of outliers. The procedures in this practice were developed primarily to apply to the simplest kind of experimental data, that is, replicate measurements of some property of a given material or observations in a supposedly random sample.