Trichloroethylene Concentrations from Example 18-3 of 2009 USEPA Guidance Document
EPA.09.Ex.19.2.chloride.df
Chloride Concentrations from Example 19-2 of 2009 USEPA Guidance Document
Benthic Data from Monitoring Program in Chesapeake Bay
EPA.09.Ex.11.1.arsenic.df
Arsenic Concentrations from Example 11-1 of 2009 USEPA Guidance Document
The Zero-Modified Lognormal (Delta) Distribution
Sulfate Concentrations from Example 6-3 of 2009 USEPA Guidance Document
EPA.02d.Ex.4.mg.per.kg.vec
Concentrations in Exhibit 4 of 2002d USEPA Guidance Document
Arsenic Concentrations from 1992 USEPA Guidance Document
EPA.09.Ex.15.1.manganese.df
Manganese Concentrations from Example 15-1 of 2009 USEPA Guidance Document
Data Frame Summarizing Available Probability Distributions and
Estimation Methods
EnvStats Functions for Summary Statistics and Plots
Arsenic concentrations from Example 7.1 of 2009 USEPA Guidance Document
EPA.09.Ex.22.2.Specific.Conductance.df
Specific Conductance from Example 22-2 of 2009 USEPA Guidance Document
EPA.09.Ex.21.1.aldicarb.df
Aldicarb Concentrations from Example 21-1 of 2009 USEPA Guidance Document
EPA.09.Ex.18.1.arsenic.df
Arsenic Concentrations from Example 18-1 of 2009 USEPA Guidance Document
Total Organic Carbon Concentrations from 1989 USEPA Guidance Document
EPA.09.Ex.17.6.sulfate.df
Sulfate Concentrations from Example 17-6 of 2009 USEPA Guidance Document
Gibbons.et.al.09.Alkilinity.vec
Alkilinity Data from Gibbons et al. (2009)
T-29 Concentrations from 1989 USEPA Guidance Document
EPA.09.Ex.17.1.loglead.df
Log-transformed Lead Concentrations from Example 17-1 of 2009 USEPA Guidance Document
EPA.09.Ex.16.2.benzene.df
Benzene Concentrations from Example 16-2 of 2009 USEPA Guidance Document
Tetrachloroethylene Concentrations from Example 16-5 of 2009 USEPA Guidance Document
Trichloroethylene Concentrations from Example 21-7 of 2009 USEPA Guidance Document
Xylene Concentrations from Example 18-4 of 2009 USEPA Guidance Document
Copper Concentrations from 1992 USEPA Guidance Document
Benzene Concentrations from 1989 USEPA Guidance Document
Sulfate Concentrations from 1989 USEPA Guidance Document
1,2,3,4-Tetrachlorobenzene Concentrations from 1994 USEPA Guidance Document
EPA.09.Ex.21.6.nitrate.df
Nitrate Concentrations from Example 21-6 of 2009 USEPA Guidance Document
The Empirical Distribution Based on a Set of Observations
Chlordane Concentrations from 1989 USEPA Guidance Document
EPA.09.Ex.18.2.chrysene.df
Chrysene Concentrations from Example 18-2 of 2009 USEPA Guidance Document
Lead Concentrations from 1994 USEPA Guidance Document
Estimate Parameters of a Beta Distribution
Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means
Iron Concentrations from Example 13-1 of 2009 USEPA Guidance Document
Fecal Coliform Data from the Illinois River
The Triangular Distribution
Vinyl Chloride Concentrations from Example 22-1 of 2009 USEPA Guidance Document
The Lognormal Distribution (Alternative Parameterization)
Estimate Quantiles of a Logistic Distribution
Compute Lack-of-Fit and Pure Error Anova Table for a Linear Model
Zinc Concentrations from 1992 USEPA Guidance Document
Total Phosphorus Data from Chesapeake Bay
Arsenic, Mercury and Strontium Concentrations in Table 9-3 of 2009 USEPA Guidance Document
EPA.02d.Ex.2.ug.per.L.vec
Concentrations in Exhibit 2 of 2002d USEPA Guidance Document
Calibration Data for Cadmium at Mass 111
Plots for a Sampling Design Based on a Tolerance Interval for a Normal Distribution
Table of Confidence Intervals for Mean or Difference Between Two Means
Empirical Cumulative Distribution Function Plot
Sample Size for Specified Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means
EnvStats Functions for Tolerance Intervals
EPA.09.Ex.14.3.alkalinity.df
Alkalinity Measures from Example 14-3 of 2009 USEPA Guidance Document
Abstract: Castillo and Hadi (1994)
Analyte Concentrations from Example 14-8 of 2009 USEPA Guidance Document
Sodium Concentrations from Example 17-7 of 2009 USEPA Guidance Document
Boxcox Power Transformation for Type I Censored Data
Predict Concentration Using Calibration
EPA.09.Ex.14.1.manganese.df
Manganese Concentrations from Example 14-1 of 2009 USEPA Guidance Document
Plot Results of Box-Cox Transformations for a Linear Model
Copper Concentrations from Example 16-4 of 2009 USEPA Guidance Document
Estimate Quantiles of a Negative Binomial Distribution
S3 Class "gof"
EPA.09.Ex.19.1.sulfate.df
Sulfate Concentrations from Example 19-1 of 2009 USEPA Guidance Document
Estimate Parameters of Gamma Distribution
EnvStats Functions for Goodness-of-Fit Tests
EnvStats Functions for Data Transformations
The Truncated Lognormal Distribution (Alternative Parameterization)
EnvStats Functions for Monte Carlo Simulation and Risk Assessment
Nickel Concentrations from 1992 USEPA Guidance Document
Log-transformed Nickel Concentrations from 1992 USEPA Guidance Document
NIOSH Air Lead Levels Data
Estimate Quantiles of a Binomial Distribution
Kendall's Nonparametric Test for Montonic Trend
EnvStats Functions for Plotting Probability Distributions
EnvStats Functions for Trend Analysis
EnvStats Functions for Power and Sample Size Calculations
Prediction Interval for Gamma Distribution
Estimate Quantiles of an Exponential Distribution
EnvStats Functions for Prediction Intervals
Modified 1,2,3,4-Tetrachlorobenzene Data with Censored Values
Estimate Rate Parameter of an Exponential Distribution
EnvStats Functions for Hypothesis Tests
Estimate Probability Parameter of a Geometric Distribution
Estimate Parameters of an Extreme Value (Gumbel) Distribution
Ozone Concentrations in the Northeast U.S.
Mixture of Two Lognormal Distributions (Alternative Parameterization)
S3 Class "calibrate"
EPA.09.Ex.12.4.naphthalene.df
Naphthalene Concentrations from Example 12-4 of 2009 USEPA Guidance Document
EPA.09.Ex.17.3.log.chrysene.df
Log-transformed Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document
The Zero-Modified Lognormal (Delta) Distribution (Alternative Parameterization)
Cadmium Concentrations from 1989 USEPA Guidance Document
EPA.09.Ex.17.3.chrysene.df
Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document
Aldicarb Concentrations from 1989 USEPA Guidance Document
Mixture of Two Lognormal Distributions
S3 Class "gofTwoSample"
Sample Size for Nonparametric Confidence Interval for a Quantile
Estimate Parameters of a Pareto Distribution
Compute Sample Size Necessary to Achieve Specified Power for One-Way Fixed-Effects Analysis of Variance
Estimate Parameters of a Logistic Distribution
Internal EnvStats objects
Estimate Parameters of a Lognormal Distribution (Log-Scale)
Fit a Calibration Line or Curve
S3 Class "boxcoxLm"
EPA.09.Ex.17.5.chloride.df
Chloride Concentrations from Example 17-5 of 2009 USEPA Guidance Document
Euler's Constant
Arsenic Concentrations from 1992 USEPA Guidance Document
plotPredIntLnormAltTestPowerCurve
Power Curves for Sampling Design for Test Based on Prediction Interval for Lognormal Distribution
Simultaneous Prediction Interval for a Lognormal Distribution
Print Output of Goodness-of-Fit Tests Based on Censored Data
Arsenic Concentrations from 1992 USEPA Guidance Document
plotPredIntNparSimultaneousDesign
Plots for a Sampling Design Based on a Simultaneous Nonparametric Prediction Interval
Ammonia Nitrogen Concentrations in the Skagit River, Marblemount, Washington
EnvStats Probability Distributions and Random Numbers
Estimate Quantiles of a Beta Distribution
Scaled Minimal Detectable Slope for a t-Test for Linear Trend
EPA.09.Table.9.4.nickel.vec
Nickel Concentrations in Table 9-4 of 2009 USEPA Guidance Document
Minimal Detectable Difference Associated with a One- or Two-Sample Proportion Test
Compute the Value of $K$ for a Prediction Interval for a Normal Distribution
Carbon Tetrachloride Concentrations from 1992 USEPA Guidance Document
Estimate Parameters for a Lognormal Distribution (Original Scale) Based on Type I Censored Data
The Generalized Extreme Value Distribution
Estimate $L$-Moments
EDB Concentrations from 1989 USEPA Guidance Document
Plot Results of Goodness-of-Fit Test
Plots for Sampling Design Based on Nonparametric Confidence Interval for a Quantile
Estimate Quantiles of a Uniform Distribution
Confidence Level for Nonparametric Prediction Interval for Continuous Distribution
Nonparametric Test for Monotonic Trend Within Each Season Based on Kendall's Tau Statistic
Estimate Quantiles of a Weibull Distribution
The Three-Parameter Lognormal Distribution
Print Output of Two-Sample Goodness-of-Fit Tests
Plot Empirical Probability Density Function
plotPredIntLnormAltSimultaneousTestPowerCurve
Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Lognormal Distribution
Copper Concentrations from Example 17-4 of 2009 USEPA Guidance Document
EnvStats Functions for Estimating Distribution Parameters
S3 Class "gofCensored"
EnvStats Functions Listed by Category
Show the EnvStats NEWS File
Coverage for Nonparametric Tolerance Interval for Continuous Distribution
Full Complement of Summary Statistics
Plots for a Sampling Design Based on a One- or Two-Sample t-Test
Plots for Sampling Design Based on One- or Two-Sample Proportion Test
Develop Gestalt of Q-Q Plots for Specific Distributions
Geometric Mean
Estimate Quantiles of a Lognormal Distribution Based on Type I Censored Data
Tolerance Interval for a Lognormal Distribution
Estimate Quantiles of a Geometric Distribution
Expected Value of Order Statistics from Random Sample from Standard Normal Distribution
Simultaneous Prediction Interval for a Gamma Distribution
Scaled Minimal Detectable Difference for One- or Two-Sample t-Test
Prediction Interval for a Poisson Distribution
Prediction Interval for a Normal Distribution
Tolerance Interval for a Gamma Distribution
plotLinearTrendTestDesign
Plots for a Sampling Design Based on a t-Test for Linear Trend
Gibbons.et.al.09.Vinyl.Chloride.vec
Vinyl Chloride Data from Gibbons et al. (2009)
EnvStats Functions for Calibration
S3 Class "boxcoxCensored"
S3 Class "boxcox"
Plots for a Sampling Design Based on a Nonparametric Tolerance Interval
predIntLnormAltSimultaneousTestPower
Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Simultaneous Prediction Interval for a Lognormal Distribution
Mixture of Two Normal Distributions
Goodness-of-Fit Test
Estimate Probability Parameter of a Negative Binomial Distribution
Chen's Modified One-Sided t-test for Skewed Distributions
Base $b$ Representation of a Number
Sample Size for a Nonparametric Prediction Interval for a Continuous Distribution
Compute the Power of a One- or Two-Sample Proportion Test
Trichloroethene concentrations in Table 9.1 of 2009 USEPA Guidance Document
One-Sample Chi-Squared Test on Variance
Benzene Concentrations from 1992 USEPA Guidance Document
Sample Size for a Specified Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution
Plot Cumulative Distribution Function
Plot Results of Group Goodness-of-Fit Test
Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution
Coefficient of (Excess) Kurtosis
Plot Two Cumulative Distribution Functions Based on Censored Data
Estimate Quantiles of a Normal Distribution
Estimate Parameters for a Lognormal Distribution (Log-Scale) Based on Type I Censored Data
Estimate Parameters of a Three-Parameter Lognormal Distribution (Log-Scale)
Test for Homogeneity of Variance Among Two or More Groups
Print Summary Statistics
Print Output of Objective for Box-Cox Power Transformations
Chrysene Concentrations from 1992 USEPA Guidance Document
Table of Confidence Intervals for Proportion or Difference Between Two Proportions
Print Output of Hypothesis Tests
Estimate Parameters of a Normal (Gaussian) Distribution
Estimate Probability-Weighted Moments
Carbon Tetrachloride Concentrations from Example 12-1 of 2009 USEPA Guidance Document
Estimate Parameter of a Binomial Distribution
Chlordane Concentrations from 1989 USEPA Guidance Document
Estimate Quantiles of a Pareto Distribution
Compute the Value of $K$ for a Simultaneous Prediction Interval for a Normal Distribution
Chromium Concentrations from 1992 USEPA Guidance Document
Test for the Presence of Serial Correlation
predIntNparSimultaneousTestPower
Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Nonparametric Simultaneous Prediction Interval
Print Output of Permutation Tests
S3 Class "estimate"
Sample Size for Specified Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions
Goodness-of-Fit Test for a Specified Probability Distribution for Groups
Generalized Pivotal Quantity for Confidence Interval for the Mean of a Normal Distribution Based on Censored Data
Print Objects of Class "estimate"
S3 Class "summaryStats"
Coefficient of Skewness
Estimate Quantiles of a Zero-Modified Normal Distribution
predIntNormSimultaneousTestPower
Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Simultaneous Prediction Interval for a Normal Distribution
Generalized Pivotal Quantity for Tolerance Interval for a Normal Distribution Based on Censored Data
Plot Results of Box-Cox Transformations
One-Sample or Paired-Sample Sign Test on a Median
Nonparametric Simultaneous Prediction Interval for a Continuous Distribution
S3 Class "gofGroup"
Estimate Parameters of a Zero-Modified Lognormal (Delta) Distribution
EPA.09.Ex.21.2.benzene.df
Benzene Concentrations from Example 21-2 of 2009 USEPA Guidance Document
Plot Pointwise Error Bars
Probability That at Least One Future Observation Falls Outside a Prediction Interval for a Lognormal Distribution
Package for Environmental Statistics, Including US EPA Guidance
Summary Statistics
Estimate Parameters of a Generalized Extreme Value Distribution
Estimate Shape and Scale Parameters for a Gamma Distribution Based on Type I Censored Data
Print Output of Goodness-of-Fit Outlier Tests
EnvStats Functions for Censored Data
Sample Size for a One- or Two-Sample t-Test, Assuming Lognormal Data
S3 Class "gofOutlier"
Type I Error Level for a One- or Two-Sample t-Test
Plot Results of Permutation Test
Pointwise Confidence Limits for Predictions
Ethylene Thiourea Dose-Response Data
Rosner's Test for Outliers
Abstract: Hosking et al. (1985)
predIntNparSimultaneousConfLevel
Confidence Level of Simultaneous Nonparametric Prediction Interval for Continuous Distribution
Goodness-of-Fit Test for Normal or Lognormal Distribution Based on Censored Data
Nonparametric Prediction Interval for a Continuous Distribution
S3 Class "htest"
Compute the Value of $K$ for a Tolerance Interval for a Normal Distribution
Fisher's One-Sample Randomization (Permutation) Test for Location
Plot Probability Density Function
Sample Size for Simultaneous Nonparametric Prediction Interval for Continuous Distribution
Tolerance Interval for a Lognormal Distribution Based on Censored Data
Plots for Sampling Design Based on Confidence Interval for Mean of a Normal Distribution or Difference Between Two Means
Plotting Positions for Type I Censored Data
Print Output of Group Goodness-of-Fit Tests
Estimate Mean of a Poisson Distribution Based on Type I Censored Data
Estimate Parameters of a Zero-Modified Normal Distribution
Test Whether the Shape Parameter of a Generalized Extreme Value Distribution is Equal to 0
Sample Size for Nonparametric Tolerance Interval for Continuous Distribution
Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions
Interquartile Range
Plots for Sampling Design Based on Confidence Interval for Binomial Proportion or Difference Between Two Proportions
Simultaneous Prediction Interval for a Normal Distribution
Compute p-Value for the Quantile Test
twoSamplePermutationTestLocation
Two-Sample or Paired-Sample Randomization (Permutation) Test for Location
1-D Scatter Plots with Confidence Intervals
Power of a One- or Two-Sample t-Test
Print Output of Objective for Box-Cox Power Transformations for an "lm" Object
Two-Sample Rank Test to Detect a Shift in a Proportion of the "Treated" Population
Confidence Level for Nonparametric Tolerance Interval for Continuous Distribution
twoSamplePermutationTestProportion
Randomization (Permutation) Test to Compare Two Proportions (Fisher's Exact Test)
EPA.02d.Ex.9.mg.per.L.vec
Concentrations in Exhibit 9 of 2002d USEPA Guidance Document
Manganese Concentrations from 1989 USEPA Guidance Document
The Gamma Distribution (Alternative Parameterization)
The Truncated Normal Distribution
The Pareto Distribution
Boxcox Power Transformation
Estimate Parameter of a Poisson Distribution
Estimate Quantiles of an Extreme Value (Gumbel) Distribution
Estimate Parameters of a Weibull Distribution
Plot Results of Goodness-of-Fit Test to Compare Two Samples
Model Predictions
Compute Sample Size Necessary to Achieve a Specified Power for a One- or Two-Sample Proportion Test
Nickel Concentrations from Example 20-1 of 2009 USEPA Guidance Document
Aldicarb Concentrations from 1989 USEPA Guidance Document
Toluene Concentrations from 1992 USEPA Guidance Document
EnvStats Functions for Printing and Plotting Objects of Various S3 Classes
Compute the Power of a One-Way Fixed-Effects Analysis of Variance
Plot Two Cumulative Distribution Functions
Lead Concentrations from 1989 USEPA Guidance Document
EnvStats Functions for Estimating Distribution Quantiles
Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions
Estimate Parameter of a Hypergeometric Distribution
Estimate Quantiles of a Lognormal Distribution
Copper and Zinc Concentrations in Shallow Ground Water
Estimate Mean and Coefficient of Variation for a Gamma Distribution Based on Type I Censored Data
Estimate Quantiles of a Zero-Modified Lognormal (Delta) Distribution
Estimate Quantiles of a Three-Parameter Lognormal Distribution
Estimate Quantiles of a Generalized Extreme Value Distribution
S3 Class "htestCensored"
Create Plots for a Sampling Design Based on a One-Way Fixed-Effects Analysis of Variance
plotPredIntNormTestPowerCurve
Power Curves for Sampling Design for Test Based on Prediction Interval for Normal Distribution
Predict Method for Linear Model Fits
plotPredIntNormSimultaneousTestPowerCurve
Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Normal Distribution
Print Objects of Class "estimateCensored"
Quantile-Quantile (Q-Q) Plot
Half-Width of a Tolerance Interval for a Normal Distribution
Print Output of Objective for Box-Cox Power Transformations Based on Type I Censored Data
twoSampleLinearRankTestCensored
Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions Based on Censored Data
Plots for a Sampling Design Based on a Nonparametric Prediction Interval
Print Output of Goodness-of-Fit Tests
Sample Size for a One- or Two-Sample t-Test
Tolerance Interval for a Normal Distribution
EPA.09.Ex.16.1.sulfate.df
Sulfate Concentrations from Example 16-1 of 2009 USEPA Guidance Document
Nickel Concentrations from Example 10-1 of 2009 USEPA Guidance Document
EPA.09.Ex.19.5.mercury.df
Mercury Concentrations from Example 19-5 of 2009 USEPA Guidance Document
EPA.02d.Ex.6.mg.per.kg.vec
Concentrations in Exhibit 6 of 2002d USEPA Guidance Document
EPA.09.Ex.21.5.beryllium.df
Beryllium Concentrations from Example 21-5 of 2009 USEPA Guidance Document
Benzene Concentrations from 1992 USEPA Guidance Document
Chromium Concentrations from 1992 USEPA Guidance Document
Example of Multiply Left-censored Data from Literature
Silver Concentrations From An Interlab Comparison
The Zero-Modified Normal Distribution
Sample Coefficient of Variation.
Empirical Cumulative Distribution Function Plot Based on Type I Censored Data
Estimate Parameters of a Lognormal Distribution (Original Scale)
Estimate Quantiles of a Normal Distribution Based on Type I Censored Data
Estimate Mean, Standard Deviation, and Standard Error Nonparametrically Based on Censored Data
Estimate Parameters for a Normal Distribution Based on Type I Censored Data
Power of a t-Test for Linear Trend
Plot Results of Goodness-of-Fit Test Based on Censored Data
Probability That at Least One Future Observation Falls Outside a Prediction Interval for a Normal Distribution
Prediction Interval for a Lognormal Distribution
Print Values
Simulate a Vector of Random Numbers From a Specified Theoretical or Empirical Probability Distribution
Simulate a Multivariate Matrix Based on a Specified Rank Correlation Mat
Power of a One- or Two-Sample t-Test Assuming Lognormal Data
EPA.09.Ex.14.4.arsenic.df
Arsenic Concentrations from Example 14-4 of 2009 USEPA Guidance Document
EPA.09.Ex.17.2.toluene.df
Toluene Concentrations from Example 17-2 of 2009 USEPA Guidance Document
Copper Concentrations from 1992 USEPA Guidance Document
Nickel Concentrations from 1992 USEPA Guidance Document
Atmospheric Environmental Conditions in New York City
Carbon Monoxide Emissions from Oil Refinery.
Apply a Box-Cox Power Transformation to a Set of Data
Compute Confidence Level Associated with a Nonparametric Confidence Interval for a Quantile
Estimate Quantiles of a Distribution Nonparametrically
Estimate Parameters of a Uniform Distribution
Geometric Standard Deviation.
Estimate Quantiles of a Gamma Distribution
Sample Size for a t-Test for Linear Trend
Convert a Long Format Data Set into a Wide Format
Plots for a Sampling Design Based on a Prediction Interval for the Next $k$ Observations from a Normal Distribution
plotPredIntNparSimultaneousTestPowerCurve
Power Curves for Sampling Design for Test Based on Nonparametric Simultaneous Prediction Interval
tTestLnormAltRatioOfMeans
Minimal or Maximal Detectable Ratio of Means for One- or Two-Sample t-Test, Assuming Lognormal Data
Nonparametric Tolerance Interval for a Continuous Distribution
Tolerance Interval for a Normal Distribution Based on Censored Data
The Chi Distribution
Log-transformed Lead Concentrations from 1989 USEPA Guidance Document
The Extreme Value (Gumbel) Distribution
The Truncated Lognormal Distribution
Ammonium Concentration in Precipitation Measured at Olympic National Park Hoh Ranger Station
Determine Detection Limit
Estimate Quantiles of a Poisson Distribution
Estimate Quantiles of a Hypergeometric Distribution
S3 Class "estimateCensored"
S3 Class "permutationTest"
Plot Results of Box-Cox Transformations Based on Type I Censored Data
Print Output of Hypothesis Tests Based on Censored Data
Plots for a Sampling Design Based on a One- or Two-Sample t-Test, Assuming Lognormal Data
Quantile-Quantile (Q-Q) Plot for Type I Censored Data
Sample Size for a Specified Half-Width of a Tolerance Interval for a Normal Distribution
Tolerance Interval for a Poisson Distribution