Data and Tools
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Loading Data into R
Scripts for loading data into R.
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Using Taxon-Environment Relationships: Assign Operational Taxonomic Units
Step instructions for assigning operational taxonomic units.
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Computing Inferences: Weighted Average Inferences
This page describes a weighted average approach for inferring environmental conditions.
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Estimating Taxon-Environment Relationships: Parametric Regressions
This page describes the parametric regression approach to estimating species-environment relationship.
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Using Taxon-Environment Relationships: Compute Biological Inferences
Step instructions for computing inferred environmental conditions.
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SSD Plots
Species sensitivity distributions, cadmium, LC50, ECOTOX, arthropod
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R Script: Non-Parametric Regression
How to Fit Non-Parametric Curves to Observations
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Estimating Taxon-Environment Relationships: Assessing Model Fit
This page describes several approaches for assessing model fit for species-environment models.
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R Script: Compute Area Under ROC Curve
How to compute the area under the ROC curve in data analysis.
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Basic Analyses
Overview of linear regression analysis and questions to consider when using this type of data analysis.
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CADStat Installation Instructions
CADStat is a statistical program designed to assist risk assessors with data analysis.
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Federal Guidance Report No. 13: CD Supplement
Order a CD from EPA which contains PDFs and other supporting materials related to Federal Guidance Report No. 13, "Cancer Risk Coefficients for Environmental Exposure to Radionuclides."
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Data & Data Products: Envirofacts – Toxics Release Inventory (TRI) Explorer Widget
Information about and embed code for EPA's Envirofacts – Toxics Release Inventory (TRI) Explorer Widget
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Data & Data Products: Envirofacts – Toxics Release Inventory (TRI) Form R Widget
Information about and embed code for EPA's Envirofacts – Toxics Release Inventory (TRI) Form R Widget
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Data & Data Products: WaterSense Widgets
Information and code for the WaterSense Widgets
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Data & Data Products: Envirofacts – Toxics Release Inventory (TRI) Widget
Information about and embed code for EPA's Envirofacts – Toxics Release Inventory (TRI) Widget
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Data & Data Products: Envirofacts – Toxic Substances Control Act (TSCA) Widget
Information about and embed code for EPA's Envirofacts – Toxic Substances Control Act (TSCA) Widget
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Data & Data Products: Envirofacts – Tribe Search
Information about and embed code for EPA's Envirofacts - Tribe Search Widget
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Data & Data Products: Envirofacts – Zip Search
Information about and embed code for EPA's Envirofacts Zip Code Search
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Data & Data Products: FedFacts Widget
Information about and embed code for EPA's FedFacts Widget