Main Title |
Performance of Statistical Tests for Site Versus Background Soil Comparisons When Distributional Assumptions Are Not Met. |
Author |
Englund, E. J. ;
|
CORP Author |
Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab. |
Publisher |
Mar 2007 |
Year Published |
2007 |
Report Number |
EPA/600/R-07/020; |
Stock Number |
PB2007-107708 |
Additional Subjects |
Statistical methods ;
Soils ;
Tests ;
Sampling ;
Performance ;
Site ;
Conceptual models ;
Comparisons ;
Background ;
Non-parametric tests ;
Realistic population distributions
|
Internet Access |
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Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB2007-107708 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
56p |
Abstract |
Statistical distributions of site and background soil samples often do not meet the assumptions of statistical tests. This is true even of non-parametric tests. This paper evaluates several statistical tests over a variety of cases involving realistic population distribution scenarios and sampling schemes. Over the range of cases, performance was erratic for most tests. When planning a project, the sampling scheme must be designed together with the statistical test, and the choice of test may vary depending on which scenario best matches the conceptual model for the site. |
Availability Notes |
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Category Codes |
68C; 48E |
NTIS Prices |
PC A05 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
019101470 |
Origin |
NTIS |
Type |
CAT |