Statistics Toolbox™

Function Reference

File I/O

caseread	Read case names from file
casewrite	Write case names to file
tblread	Read tabular data from file
tblwrite	Write tabular data to file
tdfread	Read tab-delimited file

Organizing Data

Categorical Arrays
Dataset Arrays
Grouped Data

Categorical Arrays

addlevels	Add levels
droplevels	Drop levels
getlabels	Access labels
islevel	Test for levels
ismember	Test for membership
isundefined	Test for undefined elements
levelcounts	Element counts by level
mergelevels	Merge levels
nominal	Construct nominal categorical array
ordinal	Construct ordinal categorical array
reorderlevels	Reorder levels
setlabels	Label levels
sort	Sort
sortrows	Sort rows
summary	Summary statistics for categorical array

Dataset Arrays

dataset	Construct dataset array
datasetfun	Apply function to dataset array variables
get	Access dataset array properties
grpstats	Summary statistics by group for dataset arrays
join	Merge observations
replacedata	Replace dataset variables
set	Set and display properties
sortrows	Sort rows
summary	Summary statistics for dataset array

Grouped Data

gplotmatrix	Matrix of scatter plots by group
grp2idx	Grouping variable to index vector
grpstats	Summary statistics by group
grpstats	Summary statistics by group for dataset arrays
gscatter	Scatter plot by group

Descriptive Statistics

Summaries
Measures of Central Tendency
Measures of Dispersion
Measures of Shape
Resampling Statistics
Data with Missing Values
Data Correlation

Summaries

crosstab	Cross-tabulation
grpstats	Summary statistics by group
grpstats	Summary statistics by group for dataset arrays
summary	Summary statistics for categorical array
summary	Summary statistics for dataset array
tabulate	Frequency table

Measures of Central Tendency

geomean	Geometric mean
harmmean	Harmonic mean
mean	Mean
median	Median
mode	Mode
trimmean	Mean excluding outliers

Measures of Dispersion

iqr	Interquartile range
mad	Mean or median absolute deviation
moment	Central moments
range	Range of values
std	Standard deviation
var	Variance

Measures of Shape

kurtosis	Kurtosis
moment	Central moments
prctile	Percentiles
quantile	Quantiles
skewness	Skewness
zscore	Standardized z-scores

Resampling Statistics

bootci	Bootstrap confidence interval
bootstrp	Bootstrap sampling
jackknife	Jackknife sampling

Data with Missing Values

nancov	Covariance ignoring `NaN`s
nanmax	Maximum ignoring `NaN`s
nanmean	Mean ignoring `NaN`s
nanmedian	Median ignoring `NaN`s
nanmin	Minimum ignoring `NaN`s
nanstd	Standard deviation ignoring `NaN`s
nansum	Sum ignoring `NaN`s
nanvar	Variance, ignoring `NaN`s

Data Correlation

canoncorr	Canonical correlation
cholcov	Cholesky-like covariance decomposition
cophenet	Cophenetic correlation coefficient
corr	Linear or rank correlation
corrcoef	Correlation coefficients
corrcov	Convert covariance matrix to correlation matrix
cov	Covariance
partialcorr	Linear or rank partial correlation coefficients
tiedrank	Rank adjusted for ties

Statistical Visualization

Distribution Plots
Scatter Plots
ANOVA Plots
Regression Plots
Multivariate Plots
Cluster Plots
Classification Plots
DOE Plots
SPC Plots

Distribution Plots

boxplot	Box plot
cdfplot	Empirical cumulative distribution function plot
dfittool	Interactive distribution fitting
disttool	Interactive density and distribution plots
ecdfhist	Empirical cumulative distribution function histogram
errorbar	Error bar plot
fsurfht	Interactive contour plot
hist	Histogram
hist3	Bivariate histogram
histfit	Histogram with normal fit
normplot	Normal probability plot
normspec	Normal density plot between specifications
pareto	Pareto chart
probplot	Probability plots
qqplot	Quantile-quantile plot
randtool	Interactive random number generation
scatterhist	Scatter plot with marginal histograms
surfht	Interactive contour plot
wblplot	Weibull probability plot

Scatter Plots

gline	Interactively add line to plot
gname	Add case names to plot
gplotmatrix	Matrix of scatter plots by group
gscatter	Scatter plot by group
lsline	Add least-squares line to plot
refcurve	Add polynomial to plot
refline	Add line to plot
scatter	Scatter plot
scatterhist	Scatter plot with marginal histograms

ANOVA Plots

anova1	One-way analysis of variance
aoctool	Interactive analysis of covariance
manovacluster	Dendrogram of group mean clusters following MANOVA
multcompare	Multiple comparison test

Regression Plots

addedvarplot	Added-variable plot
gline	Interactively add line to plot
lsline	Add least-squares line to plot
polytool	Interactive polynomial fitting
rcoplot	Residual case order plot
refcurve	Add polynomial to plot
refline	Add line to plot
robustdemo	Interactive robust regression
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling
view	Plot tree

Multivariate Plots

andrewsplot	Andrews plot
biplot	Biplot
glyphplot	Glyph plot
parallelcoords	Parallel coordinates plot

Cluster Plots

dendrogram	Dendrogram plot
manovacluster	Dendrogram of group mean clusters following MANOVA
silhouette	Silhouette plot

Classification Plots

view

Plot tree

DOE Plots

interactionplot	Interaction plot for grouped data
maineffectsplot	Main effects plot for grouped data
multivarichart	Multivari chart for grouped data
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling

SPC Plots

capaplot	Process capability plot
controlchart	Shewhart control charts
histfit	Histogram with normal fit
normspec	Normal density plot between specifications

Probability Distributions

Distribution Plots
Probability Density Functions
Cumulative Distribution Functions
Inverse Cumulative Distribution Functions
Distribution Statistics Functions
Distribution Fitting Functions
Negative Log-Likelihood Functions
Random Number Generators
Quasi-Random Numbers
Piecewise Distributions

Distribution Plots

boxplot	Box plot
cdfplot	Empirical cumulative distribution function plot
dfittool	Interactive distribution fitting
disttool	Interactive density and distribution plots
ecdfhist	Empirical cumulative distribution function histogram
errorbar	Error bar plot
fsurfht	Interactive contour plot
hist	Histogram
hist3	Bivariate histogram
histfit	Histogram with normal fit
normplot	Normal probability plot
normspec	Normal density plot between specifications
pareto	Pareto chart
probplot	Probability plots
qqplot	Quantile-quantile plot
randtool	Interactive random number generation
scatterhist	Scatter plot with marginal histograms
surfht	Interactive contour plot
wblplot	Weibull probability plot

Probability Density Functions

betapdf	Beta probability density function
binopdf	Binomial probability density function
chi2pdf	Chi-square probability density function
copulapdf	Copula probability density function
disttool	Interactive density and distribution plots
evpdf	Extreme value probability density function
exppdf	Exponential probability density function
fpdf	F probability density function
gampdf	Gamma probability density function
geopdf	Geometric probability density function
gevpdf	Generalized extreme value probability density function
gppdf	Generalized Pareto probability density function
hygepdf	Hypergeometric probability density function
ksdensity	Kernel smoothing density estimate
lognpdf	Lognormal probability density function
mnpdf	Multinomial probability density function
mvnpdf	Multivariate normal probability density function
mvtpdf	Multivariate t probability density function
nbinpdf	Negative binomial probability density function
ncfpdf	Noncentral F probability density function
nctpdf	Noncentral t probability density function
ncx2pdf	Noncentral chi-square probability density function
normpdf	Normal probability density function
pdf	Probability density functions
pdf	Probability density function for Gaussian mixture distribution
pdf	Probability density function for piecewise distribution
poisspdf	Poisson probability density function
raylpdf	Rayleigh probability density function
tpdf	Student's t probability density function
unidpdf	Discrete uniform probability density function
unifpdf	Continuous uniform probability density function
wblpdf	Weibull probability density function

Cumulative Distribution Functions

betacdf	Beta cumulative distribution function
binocdf	Binomial cumulative distribution function
cdf	Cumulative distribution functions
cdf	Cumulative distribution function for Gaussian mixture distribution
cdf	Cumulative distribution function for piecewise distribution
cdfplot	Empirical cumulative distribution function plot
chi2cdf	Chi-square cumulative distribution function
copulacdf	Copula cumulative distribution function
disttool	Interactive density and distribution plots
ecdf	Empirical cumulative distribution function
ecdfhist	Empirical cumulative distribution function histogram
evcdf	Extreme value cumulative distribution function
expcdf	Exponential cumulative distribution function
fcdf	F cumulative distribution function
gamcdf	Gamma cumulative distribution function
geocdf	Geometric cumulative distribution function
gevcdf	Generalized extreme value cumulative distribution function
gpcdf	Generalized Pareto cumulative distribution function
hygecdf	Hypergeometric cumulative distribution function
logncdf	Lognormal cumulative distribution function
mvncdf	Multivariate normal cumulative distribution function
mvtcdf	Multivariate t cumulative distribution function
ncfcdf	Noncentral F cumulative distribution function
nctcdf	Noncentral t cumulative distribution function
ncx2cdf	Noncentral chi-square cumulative distribution function
normcdf	Normal cumulative distribution function
poisscdf	Poisson cumulative distribution function
raylcdf	Rayleigh cumulative distribution function
tcdf	Student's t cumulative distribution function
unidcdf	Discrete uniform cumulative distribution function
unifcdf	Continuous uniform cumulative distribution function
wblcdf	Weibull cumulative distribution function

Inverse Cumulative Distribution Functions

betainv	Beta inverse cumulative distribution function
binoinv	Binomial inverse cumulative distribution function
chi2inv	Chi-square inverse cumulative distribution function
evinv	Extreme value inverse cumulative distribution function
expinv	Exponential inverse cumulative distribution function
finv	F inverse cumulative distribution function
gaminv	Gamma inverse cumulative distribution function
geoinv	Geometric inverse cumulative distribution function
gevinv	Generalized extreme value inverse cumulative distribution function
gpinv	Generalized Pareto inverse cumulative distribution function
hygeinv	Hypergeometric inverse cumulative distribution function
icdf	Inverse cumulative distribution functions
icdf	Inverse cumulative distribution function for piecewise distribution
logninv	Lognormal inverse cumulative distribution function
nbininv	Negative binomial inverse cumulative distribution function
ncfinv	Noncentral F inverse cumulative distribution function
nctinv	Noncentral t inverse cumulative distribution function
ncx2inv	Noncentral chi-square inverse cumulative distribution function
norminv	Normal inverse cumulative distribution function
poissinv	Poisson inverse cumulative distribution function
raylinv	Rayleigh inverse cumulative distribution function
tinv	Student's t inverse cumulative distribution function
unidinv	Discrete uniform inverse cumulative distribution function
unifinv	Continuous uniform inverse cumulative distribution function
wblinv	Weibull inverse cumulative distribution function

Distribution Statistics Functions

betastat	Beta mean and variance
binostat	Binomial mean and variance
chi2stat	Chi-square mean and variance
copulastat	Copula rank correlation
evstat	Extreme value mean and variance
expstat	Exponential mean and variance
fstat	F mean and variance
gamstat	Gamma mean and variance
geostat	Geometric mean and variance
gevstat	Generalized extreme value mean and variance
gpstat	Generalized Pareto mean and variance
hygestat	Hypergeometric mean and variance
lognstat	Lognormal mean and variance
nbinstat	Negative binomial mean and variance
ncfstat	Noncentral F mean and variance
nctstat	Noncentral t mean and variance
ncx2stat	Noncentral chi-square mean and variance
normstat	Normal mean and variance
poisstat	Poisson mean and variance
raylstat	Rayleigh mean and variance
tstat	Student's t mean and variance
unidstat	Discrete uniform mean of and variance
unifstat	Continuous uniform mean and variance
wblstat	Weibull mean and variance

Distribution Fitting Functions

Supported Distributions
Piecewise Distributions

Supported Distributions

betafit	Beta parameter estimates
binofit	Binomial parameter estimates
copulafit	Fit copula to data
copulaparam	Copula parameters as function of rank correlation
dfittool	Interactive distribution fitting
evfit	Extreme value parameter estimates
expfit	Exponential parameter estimates
fit	Gaussian mixture parameter estimates
gamfit	Gamma parameter estimates
gevfit	Generalized extreme value parameter estimates
gpfit	Generalized Pareto parameter estimates
histfit	Histogram with normal fit
johnsrnd	Johnson system random numbers
lognfit	Lognormal parameter estimates
mle	Maximum likelihood estimates
mlecov	Asymptotic covariance of maximum likelihood estimators
nbinfit	Negative binomial parameter estimates
normfit	Normal parameter estimates
normplot	Normal probability plot
pearsrnd	Pearson system random numbers
poissfit	Poisson parameter estimates
raylfit	Rayleigh parameter estimates
unifit	Continuous uniform parameter estimates
wblfit	Weibull parameter estimates
wblplot	Weibull probability plot

Piecewise Distributions

boundary	Piecewise distribution boundaries
lowerparams	Lower Pareto tails parameters
nsegments	Number of segments
paretotails	Construct Pareto tails object
segment	Segments containing values
upperparams	Upper Pareto tails parameters

Negative Log-Likelihood Functions

betalike	Beta negative log-likelihood
evlike	Extreme value negative log-likelihood
explike	Exponential negative log-likelihood
gamlike	Gamma negative log-likelihood
gevlike	Generalized extreme value negative log-likelihood
gplike	Generalized Pareto negative log-likelihood
lognlike	Lognormal negative log-likelihood
mvregresslike	Negative log-likelihood for multivariate regression
normlike	Normal negative log-likelihood
wbllike	Weibull negative log-likelihood

Random Number Generators

betarnd	Beta random numbers
binornd	Binomial random numbers
chi2rnd	Chi-square random numbers
copularnd	Copula random numbers
evrnd	Extreme value random numbers
exprnd	Exponential random numbers
frnd	F random numbers
gamrnd	Gamma random numbers
geornd	Geometric random numbers
gevrnd	Generalized extreme value random numbers
gprnd	Generalized Pareto random numbers
hygernd	Hypergeometric random numbers
iwishrnd	Inverse Wishart random numbers
johnsrnd	Johnson system random numbers
lhsdesign	Latin hypercube sample
lhsnorm	Latin hypercube sample from normal distribution
lognrnd	Lognormal random numbers
mhsample	Metropolis-Hastings sample
mnrnd	Multinomial random numbers
mvnrnd	Multivariate normal random numbers
mvtrnd	Multivariate t random numbers
nbinrnd	Negative binomial random numbers
ncfrnd	Noncentral F random numbers
nctrnd	Noncentral t random numbers
ncx2rnd	Noncentral chi-square random numbers
normrnd	Normal random numbers
pearsrnd	Pearson system random numbers
poissrnd	Poisson random numbers
randg	Gamma random numbers
random	Random numbers
random	Random numbers from Gaussian mixture distribution
random	Random numbers from piecewise distribution
randsample	Random sample
randtool	Interactive random number generation
raylrnd	Rayleigh random numbers
slicesample	Slice sampler
trnd	Student's t random numbers
unidrnd	Discrete uniform random numbers
unifrnd	Continuous uniform random numbers
wblrnd	Weibull random numbers
wishrnd	Wishart random numbers

Quasi-Random Numbers

haltonset	Construct Halton quasi-random point set
net	Generate quasi-random point set
qrand	Generate points from stream
qrandstream	Construct quasi-random number stream
reset	Reset state
scramble	Scramble quasi-random point set
sobolset	Construct Sobol quasi-random point set

Piecewise Distributions

boundary	Piecewise distribution boundaries
cdf	Cumulative distribution function for piecewise distribution
icdf	Inverse cumulative distribution function for piecewise distribution
lowerparams	Lower Pareto tails parameters
nsegments	Number of segments
paretotails	Construct Pareto tails object
pdf	Probability density function for piecewise distribution
random	Random numbers from piecewise distribution
segment	Segments containing values
upperparams	Upper Pareto tails parameters

Hypothesis Tests

ansaribradley	Ansari-Bradley test
barttest	Bartlett's test
canoncorr	Canonical correlation
chi2gof	Chi-square goodness-of-fit test
dwtest	Durbin-Watson test
friedman	Friedman's test
jbtest	Jarque-Bera test
kruskalwallis	Kruskal-Wallis test
kstest	One-sample Kolmogorov-Smirnov test
kstest2	Two-sample Kolmogorov-Smirnov test
lillietest	Lilliefors test
linhyptest	Linear hypothesis test
ranksum	Wilcoxon rank sum test
runstest	Runs test for randomness
sampsizepwr	Sample size and power of test
signrank	Wilcoxon signed rank test
signtest	Sign test
ttest	One-sample t-test
ttest2	Two-sample t-test
vartest	Chi-square variance test
vartest2	Two-sample F-test for equal variances
vartestn	Bartlett multiple-sample test for equal variances
zscore	Standardized z-scores
ztest	z-test

Analysis of Variance

ANOVA Plots
ANOVA Functions

ANOVA Plots

anova1	One-way analysis of variance
aoctool	Interactive analysis of covariance
manovacluster	Dendrogram of group mean clusters following MANOVA
multcompare	Multiple comparison test

ANOVA Functions

anova1	One-way analysis of variance
anova2	Two-way analysis of variance
anovan	N-way analysis of variance
aoctool	Interactive analysis of covariance
dummyvar	Create dummy variables
friedman	Friedman's test
kruskalwallis	Kruskal-Wallis test
manova1	One-way multivariate analysis of variance
manovacluster	Dendrogram of group mean clusters following MANOVA
multcompare	Multiple comparison test

Regression Analysis

Regression Plots
Linear Regression
Nonlinear Regression
Regression Trees

Regression Plots

addedvarplot	Added-variable plot
gline	Interactively add line to plot
lsline	Add least-squares line to plot
polytool	Interactive polynomial fitting
rcoplot	Residual case order plot
refcurve	Add polynomial to plot
refline	Add line to plot
robustdemo	Interactive robust regression
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling
view	Plot tree

Linear Regression

coxphfit	Cox proportional hazards regression
crossval	Loss estimate using cross-validation
cvpartition	Construct data partition for cross-validation
dummyvar	Create dummy variables
glmfit	Generalized linear model regression
glmval	Generalized linear model values
invpred	Inverse prediction
leverage	Leverage
lscov	Least-squares with known covariance
lsqnonneg	Least-squares with nonnegativity constraint
mnrfit	Multinomial logistic regression
mnrval	Multinomial logistic regression values
mvregress	Multivariate linear regression
mvregresslike	Negative log-likelihood for multivariate regression
plsregress	Partial least-squares regression
polyconf	Polynomial confidence intervals
polyfit	Polynomial fit
polytool	Interactive polynomial fitting
polyval	Polynomial values
regress	Multiple linear regression
regstats	Regression diagnostics
repartition	Repartition data for cross-validation
ridge	Ridge regression
robustdemo	Interactive robust regression
robustfit	Robust regression
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling
stepwise	Interactive stepwise regression
stepwisefit	Stepwise regression
test	Test indices for cross-validation
training	Training indices for cross-validation
x2fx	Convert predictor matrix to design matrix

Nonlinear Regression

crossval	Loss estimate using cross-validation
cvpartition	Construct data partition for cross-validation
dummyvar	Create dummy variables
hougen	Hougen-Watson model
nlinfit	Nonlinear regression
nlintool	Interactive nonlinear regression
nlparci	Nonlinear regression parameter confidence intervals
nlpredci	Nonlinear regression prediction confidence intervals
repartition	Repartition data for cross-validation
test	Test indices for cross-validation
training	Training indices for cross-validation

Regression Trees

children	Child nodes
classregtree	Construct classification and regression trees
cutcategories	Cut categories
cutpoint	Cut points
cuttype	Cut types
cutvar	Cut variable names
eval	Predicted responses
isbranch	Test node for branch
nodeerr	Node errors
nodeprob	Node probabilities
nodesize	Node size
numnodes	Number of nodes
parent	Parent node
prune	Prune tree
risk	Node risks
test	Error rate
type	Tree type
view	Plot tree

Multivariate Methods

Multivariate Plots
Multidimensional Scaling
Procrustes Analysis
Feature Selection
Feature Transformation

Multivariate Plots

andrewsplot	Andrews plot
biplot	Biplot
glyphplot	Glyph plot
parallelcoords	Parallel coordinates plot

Multidimensional Scaling

cmdscale	Classical multidimensional scaling
mahal	Mahalanobis distance
mdscale	Nonclassical multidimensional scaling
pdist	Pairwise distance
squareform	Format distance matrix

Procrustes Analysis

procrustes

Procrustes analysis

Feature Selection

sequentialfs

Sequential feature selection

Feature Transformation

Nonnegative Matrix Factorization
Principal Component Analysis
Factor Analysis

Nonnegative Matrix Factorization

nnmf	Nonnegative matrix factorization

Principal Component Analysis

barttest	Bartlett's test
pareto	Pareto chart
pcacov	Principal component analysis on covariance matrix
pcares	Residuals from principal component analysis
princomp	Principal component analysis on data

Factor Analysis

factoran

Factor analysis

Cluster Analysis

Cluster Plots
Hierarchical Clustering
K-Means Clustering
Gaussian Mixture Models

Cluster Plots

dendrogram	Dendrogram plot
manovacluster	Dendrogram of group mean clusters following MANOVA
silhouette	Silhouette plot

Hierarchical Clustering

cluster	Construct clusters from linkages
clusterdata	Construct clusters from data
cophenet	Cophenetic correlation coefficient
crossval	Loss estimate using cross-validation
cvpartition	Construct data partition for cross-validation
inconsistent	Inconsistency coefficient
linkage	Create hierarchical cluster tree
pdist	Pairwise distance
repartition	Repartition data for cross-validation
squareform	Format distance matrix
test	Test indices for cross-validation
training	Training indices for cross-validation

K-Means Clustering

crossval	Loss estimate using cross-validation
cvpartition	Construct data partition for cross-validation
kmeans	K-means clustering
mahal	Mahalanobis distance
repartition	Repartition data for cross-validation
test	Test indices for cross-validation
training	Training indices for cross-validation

Gaussian Mixture Models

cdf	Cumulative distribution function for Gaussian mixture distribution
cluster	Construct clusters from Gaussian mixture distribution
fit	Gaussian mixture parameter estimates
gmdistribution	Construct Gaussian mixture distribution
mahal	Mahalanobis distance to component means
pdf	Probability density function for Gaussian mixture distribution
posterior	Posterior probabilities of components
random	Random numbers from Gaussian mixture distribution

Classification

Classification Plots
Discriminant Analysis
Classification Trees

Classification Plots

view

Plot tree

Discriminant Analysis

classify	Discriminant analysis
crossval	Loss estimate using cross-validation
cvpartition	Construct data partition for cross-validation
mahal	Mahalanobis distance
repartition	Repartition data for cross-validation
test	Test indices for cross-validation
training	Training indices for cross-validation

Classification Trees

children	Child nodes
classcount	Class counts
classprob	Class probabilities
classregtree	Construct classification and regression trees
cutcategories	Cut categories
cutpoint	Cut points
cuttype	Cut types
cutvar	Cut variable names
eval	Predicted responses
isbranch	Test node for branch
nodeerr	Node errors
nodeprob	Node probabilities
nodesize	Node size
numnodes	Number of nodes
parent	Parent node
prune	Prune tree
risk	Node risks
test	Error rate
type	Tree type
view	Plot tree

Markov Models

Hidden Markov Models

hmmdecode	Hidden Markov model posterior state probabilities
hmmestimate	Hidden Markov model parameter estimates from emissions and states
hmmgenerate	Hidden Markov model states and emissions
hmmtrain	Hidden Markov model parameter estimates from emissions
hmmviterbi	Hidden Markov model most probable state path

Design of Experiments

DOE Plots
Full Factorial Designs
Fractional Factorial Designs
Response Surface Designs
D-Optimal Designs
Latin Hypercube Designs
Quasi-Random Designs

DOE Plots

interactionplot	Interaction plot for grouped data
maineffectsplot	Main effects plot for grouped data
multivarichart	Multivari chart for grouped data
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling

Full Factorial Designs

ff2n	Two-level full factorial design
fullfact	Full factorial design

Fractional Factorial Designs

fracfact	Fractional factorial design
fracfactgen	Fractional factorial design generators
hadamard	Hadamard matrix

Response Surface Designs

bbdesign	Box-Behnken design
ccdesign	Central composite design

D-Optimal Designs

candexch	Candidate set row exchange
candgen	Candidate set generation
cordexch	Coordinate exchange
daugment	D-optimal augmentation
dcovary	D-optimal design with fixed covariates
rowexch	Row exchange
rsmdemo	Interactive response surface demonstration

Latin Hypercube Designs

lhsdesign	Latin hypercube sample
lhsnorm	Latin hypercube sample from normal distribution

Quasi-Random Designs

haltonset	Construct Halton quasi-random point set
net	Generate quasi-random point set
qrand	Generate points from stream
qrandstream	Construct quasi-random number stream
reset	Reset state
scramble	Scramble quasi-random point set
sobolset	Construct Sobol quasi-random point set

Statistical Process Control

SPC Plots
SPC Functions

SPC Plots

capaplot	Process capability plot
controlchart	Shewhart control charts
histfit	Histogram with normal fit
normspec	Normal density plot between specifications

SPC Functions

capability	Process capability indices
controlrules	Western Electric and Nelson control rules
gagerr	Gage repeatability and reproducibility study

Graphical User Interfaces

aoctool	Interactive analysis of covariance
dfittool	Interactive distribution fitting
disttool	Interactive density and distribution plots
fsurfht	Interactive contour plot
polytool	Interactive polynomial fitting
randtool	Interactive random number generation
regstats	Regression diagnostics
robustdemo	Interactive robust regression
rsmdemo	Interactive response surface demonstration
rstool	Interactive response surface modeling
surfht	Interactive contour plot

Utility Functions

combnk	Enumeration of combinations
perms	Enumeration of permutations
statget	Access values in statistics options structure
statset	Create statistics options structure
zscore	Standardized z-scores

Capability Studies

Functions — Alphabetical List