# EnvStats v2.3.1

0

0th

Percentile

## Package for Environmental Statistics, Including US EPA Guidance

Graphical and statistical analyses of environmental data, with focus on analyzing chemical concentrations and physical parameters, usually in the context of mandated environmental monitoring. Major environmental statistical methods found in the literature and regulatory guidance documents, with extensive help that explains what these methods do, how to use them, and where to find them in the literature. Numerous built-in data sets from regulatory guidance documents and environmental statistics literature. Includes scripts reproducing analyses presented in the book "EnvStats: An R Package for Environmental Statistics" (Millard, 2013, Springer, ISBN 978-1-4614-8455-4, <http://www.springer.com/book/9781461484554>).

## Functions in EnvStats

 Name Description ACE.13.TCE.df Trichloroethylene Concentrations Before and After Remedation EPA.09.Ex.14.4.arsenic.df Arsenic Concentrations from Example 14-4 of 2009 USEPA Guidance Document EPA.09.Ex.16.1.sulfate.df Sulfate Concentrations from Example 16-1 of 2009 USEPA Guidance Document EPA.09.Ex.12.4.naphthalene.df Naphthalene Concentrations from Example 12-4 of 2009 USEPA Guidance Document EPA.09.Ex.14.1.manganese.df Manganese Concentrations from Example 14-1 of 2009 USEPA Guidance Document EPA.09.Ex.14.3.alkalinity.df Alkalinity Measures from Example 14-3 of 2009 USEPA Guidance Document EPA.09.Ex.11.1.arsenic.df Arsenic Concentrations from Example 11-1 of 2009 USEPA Guidance Document EPA.02d.Ex.2.ug.per.L.vec Concentrations in Exhibit 2 of 2002d USEPA Guidance Document EPA.09.Ex.14.8.df Analyte Concentrations from Example 14-8 of 2009 USEPA Guidance Document EPA.09.Ex.16.5.PCE.df Tetrachloroethylene Concentrations from Example 16-5 of 2009 USEPA Guidance Document EPA.09.Ex.19.2.chloride.df Chloride Concentrations from Example 19-2 of 2009 USEPA Guidance Document EPA.09.Ex.13.1.iron.df Iron Concentrations from Example 13-1 of 2009 USEPA Guidance Document EPA.09.Ex.21.5.beryllium.df Beryllium Concentrations from Example 21-5 of 2009 USEPA Guidance Document EPA.09.Ex.19.5.mercury.df Mercury Concentrations from Example 19-5 of 2009 USEPA Guidance Document EPA.09.Ex.16.2.benzene.df Benzene Concentrations from Example 16-2 of 2009 USEPA Guidance Document EPA.09.Ex.21.2.benzene.df Benzene Concentrations from Example 21-2 of 2009 USEPA Guidance Document EPA.09.Ex.18.4.xylene.df Xylene Concentrations from Example 18-4 of 2009 USEPA Guidance Document EPA.09.Ex.17.2.toluene.df Toluene Concentrations from Example 17-2 of 2009 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.16.4.copper.df Copper Concentrations from Example 16-4 of 2009 USEPA Guidance Document EPA.09.Ex.17.5.chloride.df Chloride Concentrations from Example 17-5 of 2009 USEPA Guidance Document EPA.09.Ex.19.1.sulfate.df Sulfate Concentrations from Example 19-1 of 2009 USEPA Guidance Document EPA.09.Table.9.4.nickel.vec Nickel Concentrations in Table 9-4 of 2009 USEPA Guidance Document EPA.89b.edb.df EDB Concentrations from 1989 USEPA Guidance Document EPA.09.Ex.17.3.chrysene.df Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document EPA.09.Ex.18.1.arsenic.df Arsenic Concentrations from Example 18-1 of 2009 USEPA Guidance Document EPA.09.Ex.17.7.sodium.df Sodium Concentrations from Example 17-7 of 2009 USEPA Guidance Document EPA.89b.aldicarb2.df Aldicarb Concentrations from 1989 USEPA Guidance Document EPA.09.Ex.17.6.sulfate.df Sulfate Concentrations from Example 17-6 of 2009 USEPA Guidance Document EPA.09.Ex.20.1.nickel.df Nickel Concentrations from Example 20-1 of 2009 USEPA Guidance Document EPA.89b.benzene.df Benzene Concentrations from 1989 USEPA Guidance Document EPA.09.Table.9.1.TCE.df Trichloroethene concentrations in Table 9.1 of 2009 USEPA Guidance Document Modified.TcCB.df Modified 1,2,3,4-Tetrachlorobenzene Data with Censored Values EPA.92c.arsenic1.df Arsenic Concentrations from 1992 USEPA Guidance Document ZeroModifiedLognormalAlt The Zero-Modified Lognormal (Delta) Distribution (Alternative Parameterization) EPA.09.Ex.21.1.aldicarb.df Aldicarb Concentrations from Example 21-1 of 2009 USEPA Guidance Document EPA.09.Table.9.3.df Arsenic, Mercury and Strontium Concentrations in Table 9-3 of 2009 USEPA Guidance Document EPA.92c.arsenic2.df Arsenic Concentrations from 1992 USEPA Guidance Document EPA.89b.cadmium.df Cadmium Concentrations from 1989 USEPA Guidance Document EPA.09.Ex.17.3.log.chrysene.df Log-transformed Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document EPA.89b.manganese.df Manganese Concentrations from 1989 USEPA Guidance Document EPA.92c.benzene2.df Benzene Concentrations from 1992 USEPA Guidance Document EPA.09.Ex.17.4.copper.df Copper Concentrations from Example 17-4 of 2009 USEPA Guidance Document EPA.92c.toluene.df Toluene Concentrations from 1992 USEPA Guidance Document EPA.92c.nickel1.df Nickel Concentrations from 1992 USEPA Guidance Document EPA.92c.copper2.df Copper Concentrations from 1992 USEPA Guidance Document EPA.92c.ccl4.df Carbon Tetrachloride Concentrations from 1992 USEPA Guidance Document EPA.09.Ex.21.6.nitrate.df Nitrate Concentrations from Example 21-6 of 2009 USEPA Guidance Document EPA.09.Ex.18.2.chrysene.df Chrysene Concentrations from Example 18-2 of 2009 USEPA Guidance Document EPA.09.Ex.18.3.TCE.df Trichloroethylene Concentrations from Example 18-3 of 2009 USEPA Guidance Document EPA.09.Ex.21.7.TCE.df Trichloroethylene Concentrations from Example 21-7 of 2009 USEPA Guidance Document EPA.09.Ex.6.3.sulfate.df Sulfate Concentrations from Example 6-3 of 2009 USEPA Guidance Document EPA.92c.zinc.df Zinc Concentrations from 1992 USEPA Guidance Document EPA.92c.nickel2.df Nickel Concentrations from 1992 USEPA Guidance Document Empirical The Empirical Distribution Based on a Set of Observations EnvStats-package Package for Environmental Statistics, Including US EPA Guidance EPA.89b.chlordane1.df Chlordane Concentrations from 1989 USEPA Guidance Document EPA.92c.benzene1.df Benzene Concentrations from 1992 USEPA Guidance Document EPA.89b.chlordane2.df Chlordane Concentrations from 1989 USEPA Guidance Document EPA.09.Ex.22.2.Specific.Conductance.df Specific Conductance from Example 22-2 of 2009 USEPA Guidance Document EPA.92c.arsenic3.df Arsenic Concentrations from 1992 USEPA Guidance Document Environmental Atmospheric Environmental Conditions in New York City EPA.09.Ex.7.1.arsenic.df Arsenic concentrations from Example 7.1 of 2009 USEPA Guidance Document EVD The Extreme Value (Gumbel) Distribution EPA.09.Ex.22.1.VC.df Vinyl Chloride Concentrations from Example 22-1 of 2009 USEPA Guidance Document FcnsByCatDataTrans EnvStats Functions for Data Transformations EPA.89b.aldicarb1.df Aldicarb Concentrations from 1989 USEPA Guidance Document EPA.92c.lognickel1.df Log-transformed Nickel Concentrations from 1992 USEPA Guidance Document EnvStats-internal Internal EnvStats Objects EPA.92c.chrysene.df Chrysene Concentrations from 1992 USEPA Guidance Document EPA.89b.lead.df Lead Concentrations from 1989 USEPA Guidance Document EPA.92c.copper1.df Copper Concentrations from 1992 USEPA Guidance Document EPA.89b.sulfate.df Sulfate Concentrations from 1989 USEPA Guidance Document calibrate Fit a Calibration Line or Curve FcnsByCatHypothTests EnvStats Functions for Hypothesis Tests EPA.92d.chromium.vec Chromium Concentrations from 1992 USEPA Guidance Document EPA.92d.chromium.df Chromium Concentrations from 1992 USEPA Guidance Document FcnsByCatPrintPlot EnvStats Functions for Printing and Plotting Objects of Various S3 Classes FcnsByCatMCandRisk EnvStats Functions for Monte Carlo Simulation and Risk Assessment EPA.89b.loglead.df Log-transformed Lead Concentrations from 1989 USEPA Guidance Document EPA.89b.t29.df T-29 Concentrations from 1989 USEPA Guidance Document eqbeta Estimate Quantiles of a Beta Distribution FcnsByCatPlotProbDists EnvStats Functions for Plotting Probability Distributions aovPower Compute the Power of a One-Way Fixed-Effects Analysis of Variance NormalMix Mixture of Two Normal Distributions FcnsByCatPlotUsingggplot2 EnvStats Functions for Creating Plots Using the ggplot2 Package ProUCL.Crit.Vals.for.AD.Test.for.Gamma.array ProUCL Critical Values for Anderson-Darling Goodness-of-Fit Test for Gamma Distribution geoSD Geometric Standard Deviation. boxcoxTransform Apply a Box-Cox Power Transformation to a Set of Data FcnsByCatEstDistQuants EnvStats Functions for Estimating Distribution Quantiles FcnsByCatProbDists EnvStats Probability Distributions and Random Numbers EulersConstant Euler's Constant EPA.89b.toc.vec Total Organic Carbon Concentrations from 1989 USEPA Guidance Document EPA.94b.lead.df Lead Concentrations from 1994 USEPA Guidance Document EPA.94b.tccb.df 1,2,3,4-Tetrachlorobenzene Concentrations from 1994 USEPA Guidance Document Grice.Bain.80.mat Adjusted Alpha Levels to Compute Confidence Intervals for the Mean of a Gamma Distribution Helsel.Cohn.88.app.b.df Example of Multiply Left-censored Data from Literature GammaAlt The Gamma Distribution (Alternative Parameterization) FcnsByCatGOFTests EnvStats Functions for Goodness-of-Fit Tests Gibbons.et.al.09.Alkilinity.vec Alkilinity Data from Gibbons et al. (2009) LognormalMixAlt Mixture of Two Lognormal Distributions (Alternative Parameterization) eqpois Estimate Quantiles of a Poisson Distribution FcnsByCatPower EnvStats Functions for Power and Sample Size Calculations HoskingEtAl1985 Abstract: Hosking et al. (1985) Lin.Evans.80.df Fecal Coliform Data from the Illinois River LognormalTrunc The Truncated Lognormal Distribution EPA.97.cadmium.111.df Calibration Data for Cadmium at Mass 111 Millard.Deverel.88.df Copper and Zinc Concentrations in Shallow Ground Water boxcoxCensored Boxcox Power Transformation for Type I Censored Data Helsel.Cohn.88.silver.df Silver Concentrations From An Interlab Comparison FcnsByCatPredInts EnvStats Functions for Prediction Intervals NormalTrunc The Truncated Normal Distribution FcnsByCatCalibration EnvStats Functions for Calibration Helsel.Hirsch.02.Mayfly.df Paired Counts of Mayfly Nymphs Above and Below Industrial Outfalls LognormalTruncAlt The Truncated Lognormal Distribution (Alternative Parameterization) egammaCensored Estimate Shape and Scale Parameters for a Gamma Distribution Based on Type I Censored Data Olympic.NH4.df Ammonium Concentration in Precipitation Measured at Olympic National Park Hoh Ranger Station Gibbons.et.al.09.Vinyl.Chloride.vec Vinyl Chloride Data from Gibbons et al. (2009) Ozone.NE.df Ozone Concentrations in the Northeast U.S. NIOSH.89.air.lead.vec NIOSH Air Lead Levels Data Triangular The Triangular Distribution Pareto The Pareto Distribution Total.P.df Total Phosphorus Data from Chesapeake Bay Refinery.CO.df Carbon Monoxide Emissions from Oil Refinery. base Base $b$ Representation of a Number FcnsByCat EnvStats Functions Listed by Category htestCensored.object S3 Class "htestCensored" Graham.et.al.75.etu.df Ethylene Thiourea Dose-Response Data ebinom Estimate Parameter of a Binomial Distribution boxcox Boxcox Power Transformation ZeroModifiedNormal The Zero-Modified Normal Distribution aovN Compute Sample Size Necessary to Achieve Specified Power for One-Way Fixed-Effects Analysis of Variance FcnsByCatCensoredData EnvStats Functions for Censored Data anovaPE Compute Lack-of-Fit and Pure Error Anova Table for a Linear Model cdfPlot Plot Cumulative Distribution Function FcnsByCatEstDistParams EnvStats Functions for Estimating Distribution Parameters cdfCompareCensored Plot Two Cumulative Distribution Functions Based on Censored Data ciNormN Sample Size for Specified Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means LognormalMix Mixture of Two Lognormal Distributions chenTTest Chen's Modified One-Sided t-test for Skewed Distributions Skagit.NH3_N.df Ammonia Nitrogen Concentrations in the Skagit River, Marblemount, Washington ciBinomHalfWidth Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions FcnsByCatSumStats EnvStats Functions for Summary Statistics and Plots boxcoxCensored.object S3 Class "boxcoxCensored" ZeroModifiedLognormal The Zero-Modified Lognormal (Delta) Distribution cdfCompare Plot Two Cumulative Distribution Functions boxcoxLm.object S3 Class "boxcoxLm" ecdfPlot Empirical Cumulative Distribution Function Plot FcnsByCatTrend EnvStats Functions for Trend Analysis ciBinomN Sample Size for Specified Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions eexp Estimate Rate Parameter of an Exponential Distribution egamma Estimate Parameters of Gamma Distribution FcnsByCatTolInts EnvStats Functions for Tolerance Intervals ciNormHalfWidth Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means egeom Estimate Probability Parameter of a Geometric Distribution eqlnorm Estimate Quantiles of a Lognormal Distribution detectionLimitCalibrate Determine Detection Limit calibrate.object S3 Class "calibrate" Lognormal3 The Three-Parameter Lognormal Distribution egevd Estimate Parameters of a Generalized Extreme Value Distribution errorBar Plot Pointwise Error Bars epois Estimate Parameter of a Poisson Distribution print Print Values epdfPlot Plot Empirical Probability Density Function distChoose Choose Best Fitting Distribution Based on Goodness-of-Fit Tests ciNparConfLevel Compute Confidence Level Associated with a Nonparametric Confidence Interval for a Quantile distChooseCensored.object S3 Class "distChooseCensored" ciNparN Sample Size for Nonparametric Confidence Interval for a Quantile GEVD The Generalized Extreme Value Distribution elnormCensored Estimate Parameters for a Lognormal Distribution (Log-Scale) Based on Type I Censored Data elnormAltCensored Estimate Parameters for a Lognormal Distribution (Original Scale) Based on Type I Censored Data ciTableMean Table of Confidence Intervals for Mean or Difference Between Two Means ehyper Estimate Parameter of a Hypergeometric Distribution ebeta Estimate Parameters of a Beta Distribution cv Sample Coefficient of Variation. predIntNorm Prediction Interval for a Normal Distribution elnorm Estimate Parameters of a Lognormal Distribution (Log-Scale) eqgeom Estimate Quantiles of a Geometric Distribution enormCensored Estimate Parameters for a Normal Distribution Based on Type I Censored Data enorm Estimate Parameters of a Normal (Gaussian) Distribution eqgevd Estimate Quantiles of a Generalized Extreme Value Distribution plotCiBinomDesign Plots for Sampling Design Based on Confidence Interval for Binomial Proportion or Difference Between Two Proportions elogis Estimate Parameters of a Logistic Distribution eqweibull Estimate Quantiles of a Weibull Distribution ezmnorm Estimate Parameters of a Zero-Modified Normal Distribution eqlogis Estimate Quantiles of a Logistic Distribution eqzmlnorm Estimate Quantiles of a Zero-Modified Lognormal (Delta) Distribution eqhyper Estimate Quantiles of a Hypergeometric Distribution eqnbinom Estimate Quantiles of a Negative Binomial Distribution ciTableProp Table of Confidence Intervals for Proportion or Difference Between Two Proportions newsEnvStats Show the EnvStats NEWS File plotPredIntLnormAltTestPowerCurve Power Curves for Sampling Design for Test Based on Prediction Interval for Lognormal Distribution LognormalAlt The Lognormal Distribution (Alternative Parameterization) gofTwoSample.object S3 Class "gofTwoSample" gofTestCensored Goodness-of-Fit Test for Normal or Lognormal Distribution Based on Censored Data geoMean Geometric Mean ProUCL.Crit.Vals.for.KS.Test.for.Gamma.array ProUCL Critical Values for Kolmogorov-Smirnov Goodness-of-Fit Test for Gamma Distribution kurtosis Coefficient of (Excess) Kurtosis enbinom Estimate Probability Parameter of a Negative Binomial Distribution epoisCensored Estimate Mean of a Poisson Distribution Based on Type I Censored Data lMoment Estimate $L$-Moments equnif Estimate Quantiles of a Uniform Distribution distChooseCensored Choose Best Fitting Distribution Based on Goodness-of-Fit Tests for Censored Data iqr Interquartile Range enparCensored Estimate Mean, Standard Deviation, and Standard Error Nonparametrically Based on Censored Data gofGroup.object S3 Class "gofGroup" gofGroupTest Goodness-of-Fit Test for a Specified Probability Distribution for Groups geom_stripchart 1-D Scatter Plots with Confidence Intervals Using ggplot2 qqPlotGestalt Develop Gestalt of Q-Q Plots for Specific Distributions longToWide Convert a Long Format Data Set into a Wide Format linearTrendTestScaledMds Scaled Minimal Detectable Slope for a t-Test for Linear Trend inversePredictCalibrate Predict Concentration Using Calibration pdfPlot Plot Probability Density Function boxcox.object S3 Class "boxcox" eevd Estimate Parameters of an Extreme Value (Gumbel) Distribution epareto Estimate Parameters of a Pareto Distribution oneSamplePermutationTest Fisher's One-Sample Randomization (Permutation) Test for Location eqevd Estimate Quantiles of an Extreme Value (Gumbel) Distribution print.boxcox Print Output of Objective for Box-Cox Power Transformations eqlnorm3 Estimate Quantiles of a Three-Parameter Lognormal Distribution distChoose.object S3 Class "distChoose" elnormAlt Estimate Parameters of a Lognormal Distribution (Original Scale) permutationTest.object S3 Class "permutationTest" plot.gofTwoSample Plot Results of Goodness-of-Fit Test to Compare Two Samples eqlnormCensored Estimate Quantiles of a Lognormal Distribution Based on Type I Censored Data plot.permutationTest Plot Results of Permutation Test plotPredIntNparDesign Plots for a Sampling Design Based on a Nonparametric Prediction Interval eqbinom Estimate Quantiles of a Binomial Distribution plotPredIntNparSimultaneousDesign Plots for a Sampling Design Based on a Simultaneous Nonparametric Prediction Interval plotLinearTrendTestDesign Plots for a Sampling Design Based on a t-Test for Linear Trend gpqCiNormCensored Generalized Pivotal Quantity for Confidence Interval for the Mean of a Normal Distribution Based on Censored Data eweibull Estimate Parameters of a Weibull Distribution pointwise Pointwise Confidence Limits for Predictions ecdfPlotCensored Empirical Cumulative Distribution Function Plot Based on Type I Censored Data plotPredIntLnormAltSimultaneousTestPowerCurve Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Lognormal Distribution plotPredIntNormDesign Plots for a Sampling Design Based on a Prediction Interval for the Next $k$ Observations from a Normal Distribution eqnorm Estimate Quantiles of a Normal Distribution predIntNormSimultaneousK Compute the Value of $K$ for a Simultaneous Prediction Interval for a Normal Distribution tTestN Sample Size for a One- or Two-Sample t-Test plotAovDesign Create Plots for a Sampling Design Based on a One-Way Fixed-Effects Analysis of Variance plotPropTestDesign Plots for Sampling Design Based on One- or Two-Sample Proportion Test plotPredIntNparSimultaneousTestPowerCurve Power Curves for Sampling Design for Test Based on Nonparametric Simultaneous Prediction Interval eqnormCensored Estimate Quantiles of a Normal Distribution Based on Type I Censored Data plotPredIntNormSimultaneousTestPowerCurve Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Normal Distribution eunif Estimate Parameters of a Uniform Distribution estimateCensored.object S3 Class "estimateCensored" ezmlnorm Estimate Parameters of a Zero-Modified Lognormal (Delta) Distribution predIntNormK Compute the Value of $K$ for a Prediction Interval for a Normal Distribution predIntNormN Sample Size for a Specified Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution predict Model Predictions predict.lm Predict Method for Linear Model Fits print.distChoose Print Output of Goodness-of-Fit Tests print.summaryStats Print Summary Statistics ppointsCensored Plotting Positions for Type I Censored Data elnorm3 Estimate Parameters of a Three-Parameter Lognormal Distribution (Log-Scale) evNormOrdStats Expected Value of Order Statistics for Random Sample from Standard Normal Distribution tTestAlpha Type I Error Level for a One- or Two-Sample t-Test gofOutlier.object S3 Class "gofOutlier" eqnpar Estimate Quantiles of a Distribution Nonparametrically predIntNormTestPower Probability That at Least One Future Observation Falls Outside a Prediction Interval for a Normal Distribution print.distChooseCensored Print Output of Goodness-of-Fit Tests propTestN Compute Sample Size Necessary to Achieve a Specified Power for a One- or Two-Sample Proportion Test print.boxcoxLm Print Output of Objective for Box-Cox Power Transformations for an "lm" Object predIntNormSimultaneousTestPower Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Simultaneous Prediction Interval for a Normal Distribution eqexp Estimate Quantiles of an Exponential Distribution egammaAltCensored Estimate Mean and Coefficient of Variation for a Gamma Distribution Based on Type I Censored Data propTestPower Compute the Power of a One- or Two-Sample Proportion Test gofTest Goodness-of-Fit Test predIntNparSimultaneousTestPower Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Nonparametric Simultaneous Prediction Interval eqzmnorm Estimate Quantiles of a Zero-Modified Normal Distribution plotTTestDesign Plots for a Sampling Design Based on a One- or Two-Sample t-Test linearTrendTestN Sample Size for a t-Test for Linear Trend estimate.object S3 Class "estimate" predIntGamma Prediction Interval for Gamma Distribution predIntGammaSimultaneous Simultaneous Prediction Interval for a Gamma Distribution eqgamma Estimate Quantiles of a Gamma Distribution signTest One-Sample or Paired-Sample Sign Test on a Median predIntNormSimultaneous Simultaneous Prediction Interval for a Normal Distribution predIntPois Prediction Interval for a Poisson Distribution quantileTest Two-Sample Rank Test to Detect a Shift in a Proportion of the "Treated" Population gpqTolIntNormCensored Generalized Pivotal Quantity for Tolerance Interval for a Normal Distribution Based on Censored Data kendallSeasonalTrendTest Nonparametric Test for Monotonic Trend Within Each Season Based on Kendall's Tau Statistic kendallTrendTest Kendall's Nonparametric Test for Montonic Trend propTestMdd Minimal Detectable Difference Associated with a One- or Two-Sample Proportion Test eqpareto Estimate Quantiles of a Pareto Distribution quantileTestPValue Compute p-Value for the Quantile Test print.boxcoxCensored Print Output of Objective for Box-Cox Power Transformations Based on Type I Censored Data linearTrendTestPower Power of a t-Test for Linear Trend stat_n_text Add Text Indicating the Sample Size to a ggplot2 Plot predIntNparConfLevel Confidence Level for Nonparametric Prediction Interval for Continuous Distribution pwMoment Estimate Probability-Weighted Moments stat_test_text Add Text to a ggplot2 Plot Indicating the Results of a Hypothesis Test tTestScaledMdd Scaled Minimal Detectable Difference for One- or Two-Sample t-Test tolIntGamma Tolerance Interval for a Gamma Distribution plot.gof Plot Results of Goodness-of-Fit Test qqPlot Quantile-Quantile (Q-Q) Plot htest.object S3 Class "htest" plot.gofCensored Plot Results of Goodness-of-Fit Test Based on Censored Data qqPlotCensored Quantile-Quantile (Q-Q) Plot for Type I Censored Data plot.gofGroup Plot Results of Group Goodness-of-Fit Test twoSampleLinearRankTest Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions twoSamplePermutationTestLocation Two-Sample or Paired-Sample Randomization (Permutation) Test for Location tolIntNparConfLevel Confidence Level for Nonparametric Tolerance Interval for Continuous Distribution plotTolIntNormDesign Plots for a Sampling Design Based on a Tolerance Interval for a Normal Distribution tolIntNparCoverage Coverage for Nonparametric Tolerance Interval for Continuous Distribution tTestLnormAltPower Power of a One- or Two-Sample t-Test Assuming Lognormal Data plot.boxcoxLm Plot Results of Box-Cox Transformations for a Linear Model twoSampleLinearRankTestCensored Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions Based on Censored Data plotTolIntNparDesign Plots for a Sampling Design Based on a Nonparametric Tolerance Interval print.gofGroup Print Output of Group Goodness-of-Fit Tests print.estimateCensored Print Objects of Class "estimateCensored" plot.boxcox Plot Results of Box-Cox Transformations zTestGevdShape Test Whether the Shape Parameter of a Generalized Extreme Value Distribution is Equal to 0 serialCorrelationTest Test for the Presence of Serial Correlation predIntLnormAltTestPower Probability That at Least One Future Observation Falls Outside a Prediction Interval for a Lognormal Distribution rosnerTest Rosner's Test for Outliers gof.object S3 Class "gof" stripChart 1-D Scatter Plots with Confidence Intervals gofCensored.object S3 Class "gofCensored" summaryFull Full Complement of Summary Statistics tTestLnormAltN Sample Size for a One- or Two-Sample t-Test, Assuming Lognormal Data plotCiNormDesign Plots for Sampling Design Based on Confidence Interval for Mean of a Normal Distribution or Difference Between Two Means print.gofOutlier Print Output of Goodness-of-Fit Outlier Tests predIntNparSimultaneous Nonparametric Simultaneous Prediction Interval for a Continuous Distribution plotTTestLnormAltDesign Plots for a Sampling Design Based on a One- or Two-Sample t-Test, Assuming Lognormal Data plotPredIntNormTestPowerCurve Power Curves for Sampling Design for Test Based on Prediction Interval for Normal Distribution predIntNparSimultaneousConfLevel Confidence Level of Simultaneous Nonparametric Prediction Interval for Continuous Distribution tolIntNorm Tolerance Interval for a Normal Distribution tolIntNormCensored Tolerance Interval for a Normal Distribution Based on Censored Data print.gofTwoSample Print Output of Two-Sample Goodness-of-Fit Tests tTestPower Power of a One- or Two-Sample t-Test plotCiNparDesign Plots for Sampling Design Based on Nonparametric Confidence Interval for a Quantile print.htest Print Output of Hypothesis Tests twoSamplePermutationTestProportion Randomization (Permutation) Test to Compare Two Proportions (Fisher's Exact Test) predIntLnormSimultaneous Simultaneous Prediction Interval for a Lognormal Distribution plot.boxcoxCensored Plot Results of Box-Cox Transformations Based on Type I Censored Data simulateVector Simulate a Vector of Random Numbers From a Specified Theoretical or Empirical Probability Distribution skewness Coefficient of Skewness predIntNpar Nonparametric Prediction Interval for a Continuous Distribution print.permutationTest Print Output of Permutation Tests tolIntLnorm Tolerance Interval for a Lognormal Distribution print.htestCensored Print Output of Hypothesis Tests Based on Censored Data predIntLnorm Prediction Interval for a Lognormal Distribution print.gof Print Output of Goodness-of-Fit Tests predIntNparN Sample Size for a Nonparametric Prediction Interval for a Continuous Distribution tolIntLnormCensored Tolerance Interval for a Lognormal Distribution Based on Censored Data print.estimate Print Objects of Class "estimate" predIntNparSimultaneousN Sample Size for Simultaneous Nonparametric Prediction Interval for Continuous Distribution tolIntNparN Sample Size for Nonparametric Tolerance Interval for Continuous Distribution tolIntPois Tolerance Interval for a Poisson Distribution predIntLnormAltSimultaneousTestPower Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Simultaneous Prediction Interval for a Lognormal Distribution tTestLnormAltRatioOfMeans Minimal or Maximal Detectable Ratio of Means for One- or Two-Sample t-Test, Assuming Lognormal Data stat_mean_sd_text Add Text Indicating the Mean and Standard Deviation to a ggplot2 Plot tolIntNormN Sample Size for a Specified Half-Width of a Tolerance Interval for a Normal Distribution predIntNormHalfWidth Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution varGroupTest Test for Homogeneity of Variance Among Two or More Groups stat_median_iqr_text Add Text Indicating the Median and Interquartile Range to a ggplot2 Plot summaryStats Summary Statistics tolIntNormHalfWidth Half-Width of a Tolerance Interval for a Normal Distribution varTest One-Sample Chi-Squared Test on Variance print.gofCensored Print Output of Goodness-of-Fit Tests Based on Censored Data tolIntNormK Compute the Value of $K$ for a Tolerance Interval for a Normal Distribution summaryStats.object S3 Class "summaryStats" simulateMvMatrix Simulate a Multivariate Matrix Based on a Specified Rank Correlation Mat tolIntNpar Nonparametric Tolerance Interval for a Continuous Distribution EPA.02d.Ex.6.mg.per.kg.vec Concentrations in Exhibit 6 of 2002d USEPA Guidance Document EPA.02d.Ex.4.mg.per.kg.vec Concentrations in Exhibit 4 of 2002d USEPA Guidance Document Chi The Chi Distribution EPA.02d.Ex.9.mg.per.L.vec Concentrations in Exhibit 9 of 2002d USEPA Guidance Document CastilloAndHadi1994 Abstract: Castillo and Hadi (1994) Benthic.df Benthic Data from Monitoring Program in Chesapeake Bay EPA.09.Ex.10.1.nickel.df Nickel Concentrations from Example 10-1 of 2009 USEPA Guidance Document Distribution.df Data Frame Summarizing Available Probability Distributions and Estimation Methods EPA.09.Ex.12.1.ccl4.df Carbon Tetrachloride Concentrations from Example 12-1 of 2009 USEPA Guidance Document EPA.09.Ex.15.1.manganese.df Manganese Concentrations from Example 15-1 of 2009 USEPA Guidance Document No Results!