Recommended methods for statistical analysis of data containing less-than-detectable measurements
This report is a manual for statistical workers dealing with environmental measurements, when some of the measurements are not given exactly but are only reported as less than detectable. For some statistical settings with such data, many methods have been proposed in the literature, while for others few or none have been proposed. This report gives a recommended method in each of the settings considered. The body of the report gives a brief description of each recommended method. Appendix A gives example programs using the statistical package SAS, for those methods that involve nonstandard methods. Appendix B presents the methods that were compared and the reasons for selecting each recommended method, and explains any fine points that might be of interest. 7 refs., 4 figs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6026384
- Report Number(s):
- EGG-SARE-9247-Rev.1; ON: DE92003266
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
ENVIRONMENTAL MATERIALS
MONITORING
DATA ANALYSIS
MATHEMATICAL MODELS
MAXIMUM-LIKELIHOOD FIT
PROBABILISTIC ESTIMATION
S CODES
STATISTICS
COMPUTER CODES
MATERIALS
MATHEMATICS
NUMERICAL SOLUTION
990200* - Mathematics & Computers
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)