| 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 |
|
| 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 |
Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| Category Codes |
68C; 48E |
| NTIS Prices |
PC A05 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
019101470 |
| Origin |
NTIS |
| Type |
CAT |
