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EnvStats (version 2.1.0)

Package for Environmental Statistics, Including US EPA Guidance

Description

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).

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Install

install.packages('EnvStats')

Monthly Downloads

20,755

Version

2.1.0

License

GPL (>= 3)

Maintainer

Last Published

April 18th, 2016

Functions in EnvStats (2.1.0)

EPA.09.Ex.17.3.log.chrysene.df

Log-transformed Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document
Skagit.NH3_N.df

Ammonia Nitrogen Concentrations in the Skagit River, Marblemount, Washington
EPA.09.Ex.21.7.TCE.df

Trichloroethylene Concentrations from Example 21-7 of 2009 USEPA Guidance Document
EulersConstant

Euler's Constant
EVD

The Extreme Value (Gumbel) Distribution
ciBinomHalfWidth

Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions
eqlogis

Estimate Quantiles of a Logistic Distribution
Benthic.df

Benthic Data from Monitoring Program in Chesapeake Bay
simulateMvMatrix

Simulate a Multivariate Matrix Based on a Specified Rank Correlation Mat
EPA.09.Table.9.3.df

Arsenic, Mercury and Strontium Concentrations in Table 9-3 of 2009 USEPA Guidance Document
EPA.92c.benzene2.df

Benzene Concentrations from 1992 USEPA Guidance Document
ciBinomN

Sample Size for Specified Half-Width of Confidence Interval for Binomial Proportion or Difference Between Two Proportions
EPA.09.Ex.21.6.nitrate.df

Nitrate Concentrations from Example 21-6 of 2009 USEPA Guidance Document
EPA.89b.chlordane2.df

Chlordane Concentrations from 1989 USEPA Guidance Document
FcnsByCatEstDistQuants

EnvStats Functions for Estimating Distribution Quantiles
epdfPlot

Plot Empirical Probability Density Function
Helsel.Cohn.88.silver.df

Silver Concentrations From An Interlab Comparison
EPA.92c.copper1.df

Copper Concentrations from 1992 USEPA Guidance Document
EPA.89b.sulfate.df

Sulfate Concentrations from 1989 USEPA Guidance Document
GEVD

The Generalized Extreme Value Distribution
gofTestCensored

Goodness-of-Fit Test for Normal or Lognormal Distribution Based on Censored Data
summaryStats.object

S3 Class "summaryStats"
EPA.89b.chlordane1.df

Chlordane Concentrations from 1989 USEPA Guidance Document
plot.gofGroup

Plot Results of Group Goodness-of-Fit Test
EPA.89b.toc.vec

Total Organic Carbon Concentrations from 1989 USEPA Guidance Document
egeom

Estimate Probability Parameter of a Geometric Distribution
aovN

Compute Sample Size Necessary to Achieve Specified Power for One-Way Fixed-Effects Analysis of Variance
EPA.92c.copper2.df

Copper Concentrations from 1992 USEPA Guidance Document
eqlnormCensored

Estimate Quantiles of a Lognormal Distribution Based on Type I Censored Data
FcnsByCatPrintPlot

EnvStats Functions for Printing and Plotting Objects of Various S3 Classes
EPA.09.Ex.22.2.Specific.Conductance.df

Specific Conductance from Example 22-2 of 2009 USEPA Guidance Document
FcnsByCatCalibration

EnvStats Functions for Calibration
EPA.09.Ex.21.2.benzene.df

Benzene Concentrations from Example 21-2 of 2009 USEPA Guidance Document
GammaAlt

The Gamma Distribution (Alternative Parameterization)
EPA.92d.chromium.df

Chromium Concentrations from 1992 USEPA Guidance Document
boxcoxCensored

Boxcox Power Transformation for Type I Censored Data
anovaPE

Compute Lack-of-Fit and Pure Error Anova Table for a Linear Model
FcnsByCatCensoredData

EnvStats Functions for Censored Data
FcnsByCatSumStats

EnvStats Functions for Summary Statistics and Plots
NIOSH.89.air.lead.vec

NIOSH Air Lead Levels Data
CastilloAndHadi1994

Abstract: Castillo and Hadi (1994)
LognormalMixAlt

Mixture of Two Lognormal Distributions (Alternative Parameterization)
HoskingEtAl1985

Abstract: Hosking et al. (1985)
NormalMix

Mixture of Two Normal Distributions
boxcoxTransform

Apply a Box-Cox Power Transformation to a Set of Data
LognormalTruncAlt

The Truncated Lognormal Distribution (Alternative Parameterization)
EPA.92c.zinc.df

Zinc Concentrations from 1992 USEPA Guidance Document
EPA.92d.chromium.vec

Chromium Concentrations from 1992 USEPA Guidance Document
epareto

Estimate Parameters of a Pareto Distribution
plot.boxcoxCensored

Plot Results of Box-Cox Transformations Based on Type I Censored Data
LognormalTrunc

The Truncated Lognormal Distribution
Chi

The Chi Distribution
EPA.02d.Ex.9.mg.per.L.vec

Concentrations in Exhibit 9 of 2002d USEPA Guidance Document
EPA.92c.toluene.df

Toluene Concentrations from 1992 USEPA Guidance Document
eqnbinom

Estimate Quantiles of a Negative Binomial Distribution
print.estimate

Print Objects of Class "estimate"
Total.P.df

Total Phosphorus Data from Chesapeake Bay
EPA.09.Ex.14.1.manganese.df

Manganese Concentrations from Example 14-1 of 2009 USEPA Guidance Document
FcnsByCatTolInts

EnvStats Functions for Tolerance Intervals
EPA.92c.nickel1.df

Nickel Concentrations from 1992 USEPA Guidance Document
Lognormal3

The Three-Parameter Lognormal Distribution
EPA.09.Ex.12.1.ccl4.df

Carbon Tetrachloride Concentrations from Example 12-1 of 2009 USEPA Guidance Document
FcnsByCatDataTrans

EnvStats Functions for Data Transformations
detectionLimitCalibrate

Determine Detection Limit
predIntNormHalfWidth

Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution
aovPower

Compute the Power of a One-Way Fixed-Effects Analysis of Variance
ciTableProp

Table of Confidence Intervals for Proportion or Difference Between Two Proportions
EPA.09.Ex.15.1.manganese.df

Manganese Concentrations from Example 15-1 of 2009 USEPA Guidance Document
pdfPlot

Plot Probability Density Function
gofTest

Goodness-of-Fit Test
EPA.09.Ex.10.1.nickel.df

Nickel Concentrations from Example 10-1 of 2009 USEPA Guidance Document
print.summaryStats

Print Summary Statistics
predIntNorm

Prediction Interval for a Normal Distribution
enorm

Estimate Parameters of a Normal (Gaussian) Distribution
elnorm3

Estimate Parameters of a Three-Parameter Lognormal Distribution (Log-Scale)
newsEnvStats

Show the EnvStats NEWS File
ebinom

Estimate Parameter of a Binomial Distribution
elnormAltCensored

Estimate Parameters for a Lognormal Distribution (Original Scale) Based on Type I Censored Data
ebeta

Estimate Parameters of a Beta Distribution
estimate.object

S3 Class "estimate"
EPA.09.Ex.17.7.sodium.df

Sodium Concentrations from Example 17-7 of 2009 USEPA Guidance Document
eqzmnorm

Estimate Quantiles of a Zero-Modified Normal Distribution
EPA.09.Ex.7.1.arsenic.df

Arsenic concentrations from Example 7.1 of 2009 USEPA Guidance Document
eevd

Estimate Parameters of an Extreme Value (Gumbel) Distribution
summaryStats

Summary Statistics
equnif

Estimate Quantiles of a Uniform Distribution
gpqCiNormCensored

Generalized Pivotal Quantity for Confidence Interval for the Mean of a Normal Distribution Based on Censored Data
plotPredIntLnormAltTestPowerCurve

Power Curves for Sampling Design for Test Based on Prediction Interval for Lognormal Distribution
gpqTolIntNormCensored

Generalized Pivotal Quantity for Tolerance Interval for a Normal Distribution Based on Censored Data
enbinom

Estimate Probability Parameter of a Negative Binomial Distribution
EPA.09.Ex.16.1.sulfate.df

Sulfate Concentrations from Example 16-1 of 2009 USEPA Guidance Document
tolIntPois

Tolerance Interval for a Poisson Distribution
predIntNparN

Sample Size for a Nonparametric Prediction Interval for a Continuous Distribution
propTestPower

Compute the Power of a One- or Two-Sample Proportion Test
plotPredIntNormDesign

Plots for a Sampling Design Based on a Prediction Interval for the Next $k$ Observations from a Normal Distribution
gofCensored.object

S3 Class "gofCensored"
plot.gofTwoSample

Plot Results of Goodness-of-Fit Test to Compare Two Samples
eqexp

Estimate Quantiles of an Exponential Distribution
EPA.09.Ex.17.3.chrysene.df

Chrysene Concentrations from Example 17-3 of 2009 USEPA Guidance Document
plotAovDesign

Create Plots for a Sampling Design Based on a One-Way Fixed-Effects Analysis of Variance
FcnsByCatPredInts

EnvStats Functions for Prediction Intervals
pointwise

Pointwise Confidence Limits for Predictions
inversePredictCalibrate

Predict Concentration Using Calibration
permutationTest.object

S3 Class "permutationTest"
eqpois

Estimate Quantiles of a Poisson Distribution
EPA.09.Table.9.1.TCE.df

Trichloroethene concentrations in Table 9.1 of 2009 USEPA Guidance Document
LognormalMix

Mixture of Two Lognormal Distributions
summaryFull

Full Complement of Summary Statistics
EPA.94b.tccb.df

1,2,3,4-Tetrachlorobenzene Concentrations from 1994 USEPA Guidance Document
EPA.92c.lognickel1.df

Log-transformed Nickel Concentrations from 1992 USEPA Guidance Document
kendallTrendTest

Kendall's Nonparametric Test for Montonic Trend
EPA.92c.ccl4.df

Carbon Tetrachloride Concentrations from 1992 USEPA Guidance Document
predIntNparSimultaneousConfLevel

Confidence Level of Simultaneous Nonparametric Prediction Interval for Continuous Distribution
boxcox.object

S3 Class "boxcox"
EPA.02d.Ex.2.ug.per.L.vec

Concentrations in Exhibit 2 of 2002d USEPA Guidance Document
plotPredIntNormSimultaneousTestPowerCurve

Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Normal Distribution
ciNormN

Sample Size for Specified Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means
rosnerTest

Rosner's Test for Outliers
linearTrendTestPower

Power of a t-Test for Linear Trend
print

Print Values
twoSamplePermutationTestLocation

Two-Sample or Paired-Sample Randomization (Permutation) Test for Location
ciNparConfLevel

Compute Confidence Level Associated with a Nonparametric Confidence Interval for a Quantile
Distribution.df

Data Frame Summarizing Available Probability Distributions and Estimation Methods
EPA.09.Ex.14.4.arsenic.df

Arsenic Concentrations from Example 14-4 of 2009 USEPA Guidance Document
varTest

One-Sample Chi-Squared Test on Variance
tolIntNormHalfWidth

Half-Width of a Tolerance Interval for a Normal Distribution
EPA.09.Table.9.4.nickel.vec

Nickel Concentrations in Table 9-4 of 2009 USEPA Guidance Document
qqPlotCensored

Quantile-Quantile (Q-Q) Plot for Type I Censored Data
tTestLnormAltN

Sample Size for a One- or Two-Sample t-Test, Assuming Lognormal Data
tolIntNparCoverage

Coverage for Nonparametric Tolerance Interval for Continuous Distribution
plotCiNormDesign

Plots for Sampling Design Based on Confidence Interval for Mean of a Normal Distribution or Difference Between Two Means
enormCensored

Estimate Parameters for a Normal Distribution Based on Type I Censored Data
plot.gof

Plot Results of Goodness-of-Fit Test
plotPredIntNparSimultaneousTestPowerCurve

Power Curves for Sampling Design for Test Based on Nonparametric Simultaneous Prediction Interval
plotPredIntLnormAltSimultaneousTestPowerCurve

Power Curves for Sampling Design for Test Based on Simultaneous Prediction Interval for Lognormal Distribution
kendallSeasonalTrendTest

Nonparametric Test for Monotonic Trend Within Each Season Based on Kendall's Tau Statistic
EPA.89b.aldicarb1.df

Aldicarb Concentrations from 1989 USEPA Guidance Document
Empirical

The Empirical Distribution Based on a Set of Observations
plotTolIntNormDesign

Plots for a Sampling Design Based on a Tolerance Interval for a Normal Distribution
plotTTestLnormAltDesign

Plots for a Sampling Design Based on a One- or Two-Sample t-Test, Assuming Lognormal Data
FcnsByCatTrend

EnvStats Functions for Trend Analysis
print.gofOutlier

Print Output of Goodness-of-Fit Outlier Tests
propTestN

Compute Sample Size Necessary to Achieve a Specified Power for a One- or Two-Sample Proportion Test
errorBar

Plot Pointwise Error Bars
ppointsCensored

Plotting Positions for Type I Censored Data
Ozone.NE.df

Ozone Concentrations in the Northeast U.S.
skewness

Coefficient of Skewness
boxcoxLm.object

S3 Class "boxcoxLm"
EPA.94b.lead.df

Lead Concentrations from 1994 USEPA Guidance Document
print.gofCensored

Print Output of Goodness-of-Fit Tests Based on Censored Data
enparCensored

Estimate Mean, Standard Deviation, and Standard Error Nonparametrically Based on Censored Data
predIntNormSimultaneous

Simultaneous Prediction Interval for a Normal Distribution
eqbinom

Estimate Quantiles of a Binomial Distribution
tolIntNorm

Tolerance Interval for a Normal Distribution
ZeroModifiedLognormal

The Zero-Modified Lognormal (Delta) Distribution
ecdfPlotCensored

Empirical Cumulative Distribution Function Plot Based on Type I Censored Data
geoMean

Geometric Mean
plotTolIntNparDesign

Plots for a Sampling Design Based on a Nonparametric Tolerance Interval
epoisCensored

Estimate Mean of a Poisson Distribution Based on Type I Censored Data
plotCiBinomDesign

Plots for Sampling Design Based on Confidence Interval for Binomial Proportion or Difference Between Two Proportions
predict

Model Predictions
egamma

Estimate Parameters of Gamma Distribution
qqPlotGestalt

Develop Gestalt of Q-Q Plots for Specific Distributions
print.gofGroup

Print Output of Group Goodness-of-Fit Tests
EPA.09.Ex.16.5.PCE.df

Tetrachloroethylene Concentrations from Example 16-5 of 2009 USEPA Guidance Document
print.htestCensored

Print Output of Hypothesis Tests Based on Censored Data
quantileTest

Two-Sample Rank Test to Detect a Shift in a Proportion of the "Treated" Population
EPA.09.Ex.20.1.nickel.df

Nickel Concentrations from Example 20-1 of 2009 USEPA Guidance Document
egammaAltCensored

Estimate Mean and Coefficient of Variation for a Gamma Distribution Based on Type I Censored Data
tTestPower

Power of a One- or Two-Sample t-Test
htestCensored.object

S3 Class "htestCensored"
elnormCensored

Estimate Parameters for a Lognormal Distribution (Log-Scale) Based on Type I Censored Data
eqgevd

Estimate Quantiles of a Generalized Extreme Value Distribution
eqnormCensored

Estimate Quantiles of a Normal Distribution Based on Type I Censored Data
tolIntNormCensored

Tolerance Interval for a Normal Distribution Based on Censored Data
ezmnorm

Estimate Parameters of a Zero-Modified Normal Distribution
plot.gofCensored

Plot Results of Goodness-of-Fit Test Based on Censored Data
quantileTestPValue

Compute p-Value for the Quantile Test
tTestScaledMdd

Scaled Minimal Detectable Difference for One- or Two-Sample t-Test
qqPlot

Quantile-Quantile (Q-Q) Plot
print.gof

Print Output of Goodness-of-Fit Tests
EPA.09.Ex.21.5.beryllium.df

Beryllium Concentrations from Example 21-5 of 2009 USEPA Guidance Document
plot.boxcoxLm

Plot Results of Box-Cox Transformations for a Linear Model
FcnsByCatProbDists

EnvStats Probability Distributions and Random Numbers
evNormOrdStats

Expected Value of Order Statistics from Random Sample from Standard Normal Distribution
twoSampleLinearRankTest

Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions
FcnsByCatPower

EnvStats Functions for Power and Sample Size Calculations
Gibbons.et.al.09.Alkilinity.vec

Alkilinity Data from Gibbons et al. (2009)
print.permutationTest

Print Output of Permutation Tests
predIntNparSimultaneousN

Sample Size for Simultaneous Nonparametric Prediction Interval for Continuous Distribution
EPA.89b.cadmium.df

Cadmium Concentrations from 1989 USEPA Guidance Document
Millard.Deverel.88.df

Copper and Zinc Concentrations in Shallow Ground Water
print.estimateCensored

Print Objects of Class "estimateCensored"
gofOutlier.object

S3 Class "gofOutlier"
pwMoment

Estimate Probability-Weighted Moments
linearTrendTestScaledMds

Scaled Minimal Detectable Slope for a t-Test for Linear Trend
tolIntNormK

Compute the Value of $K$ for a Tolerance Interval for a Normal Distribution
plotLinearTrendTestDesign

Plots for a Sampling Design Based on a t-Test for Linear Trend
EPA.92c.arsenic1.df

Arsenic Concentrations from 1992 USEPA Guidance Document
EPA.97.cadmium.111.df

Calibration Data for Cadmium at Mass 111
tTestN

Sample Size for a One- or Two-Sample t-Test
ciNparN

Sample Size for Nonparametric Confidence Interval for a Quantile
eqgamma

Estimate Quantiles of a Gamma Distribution
varGroupTest

Test for Homogeneity of Variance Among Two or More Groups
FcnsByCatHypothTests

EnvStats Functions for Hypothesis Tests
eqlnorm

Estimate Quantiles of a Lognormal Distribution
eqlnorm3

Estimate Quantiles of a Three-Parameter Lognormal Distribution
gofTwoSample.object

S3 Class "gofTwoSample"
egammaCensored

Estimate Shape and Scale Parameters for a Gamma Distribution Based on Type I Censored Data
EPA.09.Ex.11.1.arsenic.df

Arsenic Concentrations from Example 11-1 of 2009 USEPA Guidance Document
epois

Estimate Parameter of a Poisson Distribution
plot.permutationTest

Plot Results of Permutation Test
eqnorm

Estimate Quantiles of a Normal Distribution
eqgeom

Estimate Quantiles of a Geometric Distribution
geoSD

Geometric Standard Deviation.
plotPredIntNparSimultaneousDesign

Plots for a Sampling Design Based on a Simultaneous Nonparametric Prediction Interval
tolIntNormN

Sample Size for a Specified Half-Width of a Tolerance Interval for a Normal Distribution
EPA.09.Ex.12.4.naphthalene.df

Naphthalene Concentrations from Example 12-4 of 2009 USEPA Guidance Document
EPA.09.Ex.14.8.df

Analyte Concentrations from Example 14-8 of 2009 USEPA Guidance Document
EPA.09.Ex.17.5.chloride.df

Chloride Concentrations from Example 17-5 of 2009 USEPA Guidance Document
EPA.89b.loglead.df

Log-transformed Lead Concentrations from 1989 USEPA Guidance Document
Helsel.Hirsch.02.Mayfly.df

Paired Counts of Mayfly Nymphs Above and Below Industrial Outfalls
lMoment

Estimate $L$-Moments
plot.boxcox

Plot Results of Box-Cox Transformations
tolIntLnormCensored

Tolerance Interval for a Lognormal Distribution Based on Censored Data
twoSamplePermutationTestProportion

Randomization (Permutation) Test to Compare Two Proportions (Fisher's Exact Test)
zTestGevdShape

Test Whether the Shape Parameter of a Generalized Extreme Value Distribution is Equal to 0
Triangular

The Triangular Distribution
ecdfPlot

Empirical Cumulative Distribution Function Plot
cv

Sample Coefficient of Variation.
elogis

Estimate Parameters of a Logistic Distribution
tolIntNparN

Sample Size for Nonparametric Tolerance Interval for Continuous Distribution
eqhyper

Estimate Quantiles of a Hypergeometric Distribution
ehyper

Estimate Parameter of a Hypergeometric Distribution
eqweibull

Estimate Quantiles of a Weibull Distribution
predIntLnormSimultaneous

Simultaneous Prediction Interval for a Lognormal Distribution
EPA.09.Ex.17.4.copper.df

Copper Concentrations from Example 17-4 of 2009 USEPA Guidance Document
EPA.92c.benzene1.df

Benzene Concentrations from 1992 USEPA Guidance Document
EPA.92c.chrysene.df

Chrysene Concentrations from 1992 USEPA Guidance Document
EPA.92c.arsenic3.df

Arsenic Concentrations from 1992 USEPA Guidance Document
EPA.92c.nickel2.df

Nickel Concentrations from 1992 USEPA Guidance Document
Modified.TcCB.df

Modified 1,2,3,4-Tetrachlorobenzene Data with Censored Values
FcnsByCatMCandRisk

EnvStats Functions for Monte Carlo Simulation and Risk Assessment
Graham.et.al.75.etu.df

Ethylene Thiourea Dose-Response Data
Pareto

The Pareto Distribution
eqnpar

Estimate Quantiles of a Distribution Nonparametrically
eqzmlnorm

Estimate Quantiles of a Zero-Modified Lognormal (Delta) Distribution
predIntGamma

Prediction Interval for Gamma Distribution
predIntNparSimultaneousTestPower

Probability That at Least One Set of Future Observations Violates the Given Rule Based on a Nonparametric Simultaneous Prediction Interval
predIntNparSimultaneous

Nonparametric Simultaneous Prediction Interval for a Continuous Distribution
print.gofTwoSample

Print Output of Two-Sample Goodness-of-Fit Tests
EPA.09.Ex.16.2.benzene.df

Benzene Concentrations from Example 16-2 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.6.3.sulfate.df

Sulfate Concentrations from Example 6-3 of 2009 USEPA Guidance Document
EPA.89b.edb.df

EDB Concentrations from 1989 USEPA Guidance Document
Environmental

Atmospheric Environmental Conditions in New York City
Lin.Evans.80.df

Fecal Coliform Data from the Illinois River
Refinery.CO.df

Carbon Monoxide Emissions from Oil Refinery.
boxcoxCensored.object

S3 Class "boxcoxCensored"
egevd

Estimate Parameters of a Generalized Extreme Value Distribution
eqpareto

Estimate Quantiles of a Pareto Distribution
plotPropTestDesign

Plots for Sampling Design Based on One- or Two-Sample Proportion Test
plotCiNparDesign

Plots for Sampling Design Based on Nonparametric Confidence Interval for a Quantile
EPA.09.Ex.18.1.arsenic.df

Arsenic Concentrations from Example 18-1 of 2009 USEPA Guidance Document
EPA.09.Ex.18.4.xylene.df

Xylene Concentrations from Example 18-4 of 2009 USEPA Guidance Document
EPA.89b.manganese.df

Manganese Concentrations from 1989 USEPA Guidance Document
EPA.92c.arsenic2.df

Arsenic Concentrations from 1992 USEPA Guidance Document
Gibbons.et.al.09.Vinyl.Chloride.vec

Vinyl Chloride Data from Gibbons et al. (2009)
LognormalAlt

The Lognormal Distribution (Alternative Parameterization)
NormalTrunc

The Truncated Normal Distribution
chenTTest

Chen's Modified One-Sided t-test for Skewed Distributions
cdfPlot

Plot Cumulative Distribution Function
eexp

Estimate Rate Parameter of an Exponential Distribution
eqbeta

Estimate Quantiles of a Beta Distribution
estimateCensored.object

S3 Class "estimateCensored"
predIntNormN

Sample Size for a Specified Half-Width of a Prediction Interval for the next $k$ Observations from a Normal Distribution
tTestLnormAltRatioOfMeans

Minimal or Maximal Detectable Ratio of Means for One- or Two-Sample t-Test, Assuming Lognormal Data
print.boxcox

Print Output of Objective for Box-Cox Power Transformations
tolIntNpar

Nonparametric Tolerance Interval for a Continuous Distribution
tolIntGamma

Tolerance Interval for a Gamma Distribution
EPA.02d.Ex.4.mg.per.kg.vec

Concentrations in Exhibit 4 of 2002d USEPA Guidance Document
EPA.09.Ex.13.1.iron.df

Iron Concentrations from Example 13-1 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.19.5.mercury.df

Mercury Concentrations from Example 19-5 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.19.1.sulfate.df

Sulfate Concentrations from Example 19-1 of 2009 USEPA Guidance Document
EPA.09.Ex.17.2.toluene.df

Toluene Concentrations from Example 17-2 of 2009 USEPA Guidance Document
iqr

Interquartile Range
predIntLnorm

Prediction Interval for a Lognormal Distribution
EnvStats-package

Package for Environmental Statistics, Including US EPA Guidance
predIntPois

Prediction 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
cdfCompare

Plot Two Cumulative Distribution Functions
htest.object

S3 Class "htest"
gof.object

S3 Class "gof"
print.boxcoxCensored

Print Output of Objective for Box-Cox Power Transformations Based on Type I Censored Data
ZeroModifiedLognormalAlt

The Zero-Modified Lognormal (Delta) Distribution (Alternative Parameterization)
stripChart

1-D Scatter Plots with Confidence Intervals
EPA.89b.aldicarb2.df

Aldicarb Concentrations from 1989 USEPA Guidance Document
tTestAlpha

Type I Error Level for a One- or Two-Sample t-Test
EPA.89b.benzene.df

Benzene Concentrations from 1989 USEPA Guidance Document
EPA.09.Ex.14.3.alkalinity.df

Alkalinity Measures from Example 14-3 of 2009 USEPA Guidance Document
eunif

Estimate Parameters of a Uniform Distribution
ciTableMean

Table of Confidence Intervals for Mean or Difference Between Two Means
longToWide

Convert a Long Format Data Set into a Wide Format
EPA.89b.t29.df

T-29 Concentrations from 1989 USEPA Guidance Document
predIntNormTestPower

Probability That at Least One Future Observation Falls Outside a Prediction Interval for a 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
FcnsByCatEstDistParams

EnvStats Functions for Estimating Distribution Parameters
calibrate

Fit a Calibration Line or Curve
Olympic.NH4.df

Ammonium Concentration in Precipitation Measured at Olympic National Park Hoh Ranger Station
FcnsByCat

EnvStats Functions Listed by Category
Helsel.Cohn.88.app.b.df

Example of Multiply Left-censored Data from Literature
kurtosis

Coefficient of (Excess) Kurtosis
simulateVector

Simulate a Vector of Random Numbers From a Specified Theoretical or Empirical Probability Distribution
cdfCompareCensored

Plot Two Cumulative Distribution Functions Based on Censored Data
tTestLnormAltPower

Power of a One- or Two-Sample t-Test Assuming Lognormal Data
calibrate.object

S3 Class "calibrate"
gofGroup.object

S3 Class "gofGroup"
EPA.09.Ex.21.1.aldicarb.df

Aldicarb Concentrations from Example 21-1 of 2009 USEPA Guidance Document
gofGroupTest

Goodness-of-Fit Test for a Specified Probability Distribution for Groups
predIntGammaSimultaneous

Simultaneous Prediction Interval for a Gamma Distribution
plotPredIntNparDesign

Plots for a Sampling Design Based on a Nonparametric Prediction Interval
base

Base $b$ Representation of a Number
signTest

One-Sample or Paired-Sample Sign Test on a Median
predIntLnormAltTestPower

Probability That at Least One Future Observation Falls Outside a Prediction Interval for a Lognormal Distribution
predIntNormSimultaneousK

Compute the Value of $K$ for a Simultaneous Prediction Interval for a Normal Distribution
EPA.02d.Ex.6.mg.per.kg.vec

Concentrations in Exhibit 6 of 2002d USEPA Guidance Document
print.boxcoxLm

Print Output of Objective for Box-Cox Power Transformations for an "lm" Object
propTestMdd

Minimal Detectable Difference Associated with a One- or Two-Sample Proportion Test
eweibull

Estimate Parameters of a Weibull Distribution
EPA.09.Ex.16.4.copper.df

Copper Concentrations from Example 16-4 of 2009 USEPA Guidance Document
serialCorrelationTest

Test for the Presence of Serial Correlation
FcnsByCatPlotProbDists

EnvStats Functions for Plotting Probability Distributions
tolIntLnorm

Tolerance Interval for a Lognormal Distribution
twoSampleLinearRankTestCensored

Two-Sample Linear Rank Test to Detect a Difference Between Two Distributions Based on Censored Data
ZeroModifiedNormal

The Zero-Modified Normal Distribution
boxcox

Boxcox Power Transformation
elnorm

Estimate Parameters of a Lognormal Distribution (Log-Scale)
oneSamplePermutationTest

Fisher's One-Sample Randomization (Permutation) Test for Location
plotPredIntNormTestPowerCurve

Power Curves for Sampling Design for Test Based on Prediction Interval for Normal Distribution
predIntNpar

Nonparametric Prediction Interval for a Continuous Distribution
predIntNormK

Compute the Value of $K$ for a Prediction Interval for a Normal Distribution
EPA.09.Ex.22.1.VC.df

Vinyl Chloride Concentrations from Example 22-1 of 2009 USEPA Guidance Document
elnormAlt

Estimate Parameters of a Lognormal Distribution (Original Scale)
plotTTestDesign

Plots for a Sampling Design Based on a One- or Two-Sample t-Test
predIntNparConfLevel

Confidence Level for Nonparametric Prediction Interval for Continuous Distribution
EPA.89b.lead.df

Lead Concentrations from 1989 USEPA Guidance Document
ACE.13.TCE.df

Trichloroethylene Concentrations Before and After Remedation
FcnsByCatGOFTests

EnvStats Functions for Goodness-of-Fit Tests
EPA.09.Ex.17.6.sulfate.df

Sulfate Concentrations from Example 17-6 of 2009 USEPA Guidance Document
ciNormHalfWidth

Half-Width of Confidence Interval for Normal Distribution Mean or Difference Between Two Means
eqevd

Estimate Quantiles of an Extreme Value (Gumbel) Distribution
tolIntNparConfLevel

Confidence Level for Nonparametric Tolerance Interval for Continuous Distribution
ezmlnorm

Estimate Parameters of a Zero-Modified Lognormal (Delta) Distribution
print.htest

Print Output of Hypothesis Tests
EPA.09.Ex.19.2.chloride.df

Chloride Concentrations from Example 19-2 of 2009 USEPA Guidance Document
linearTrendTestN

Sample Size for a t-Test for Linear Trend
predict.lm

Predict Method for Linear Model Fits