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Statistical Estimation, Testing, and Computing Overview
Population Estimation
- Population size estimates for Site Status categories
- Proportions for categories
- Population Mean and variance
- Cumulative Distribution Function estimates for continuous variables
- Testing for difference between two CDFs
- Construct tables and plots
Statistical Computing Environment
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Information management for data
- EMAP West: Available from S.W.I.M. web site
- Monitoring organization responsible
- STORET: when includes design information
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Data file formats
- ASCII: CVS or Tab delimited
- EXCEL spreadsheets
- SAS dataset: sd2
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Analysis Software
- S-Plus professional (Flexible analysis, Estimation functions developed, Software costs)
- R (Similar to S-Plus, S-Plus functions work, Current development choice, Software free)
- SAS (Flexible analysis, SAS macros developed, Software costs)
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