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Statistics Toolbox.
Version 2.1.0 03-Apr-1997
New Features
Readme - Version 2.1.0 synopsis of new functionality.
Distributions.
Parameter estimation.
betafit - Beta parameter estimation.
binofit - Binomial parameter estimation.
expfit - Exponential parameter estimation.
gamfit - Gamma parameter estimation.
mle - Maximum likelihood estimation (MLE).
normfit - Normal parameter estimation.
poissfit - Poisson parameter estimation.
unifit - Uniform parameter estimation.
weibfit - Weibull parameter estimation.
Probability density functions (pdf).
betapdf - Beta density.
binopdf - Binomial density.
chi2pdf - Chi square density.
exppdf - Exponential density.
fpdf - F density.
gampdf - Gamma density.
geopdf - Geometric density.
hygepdf - Hypergeometric density.
lognpdf - Lognormal density.
nbinpdf - Negative binomial density.
ncfpdf - Noncentral F density.
nctpdf - Noncentral t density.
ncx2pdf - Noncentral Chi-square density.
normpdf - Normal (Gaussian) density.
pdf - Density function for a specified distribution.
poisspdf - Poisson density.
raylpdf - Rayleigh density.
tpdf - T density.
unidpdf - Discrete uniform density.
unifpdf - Uniform density.
weibpdf - Weibull density.
Cumulative Distribution functions (cdf).
betacdf - Beta cdf.
binocdf - Binomial cdf.
cdf - Specified cumulative distribution function.
chi2cdf - Chi square cdf.
expcdf - Exponential cdf.
fcdf - F cdf.
gamcdf - Gamma cdf.
geocdf - Geometric cdf.
hygecdf - Hypergeometric cdf.
logncdf - Lognormal cdf.
nbincdf - Negative binomial cdf.
ncfcdf - Noncentral F cdf.
nctcdf - Noncentral t cdf.
ncx2cdf - Noncentral Chi-square cdf.
normcdf - Normal (Gaussian) cdf.
poisscdf - Poisson cdf.
raylcdf - Rayleigh cdf.
tcdf - T cdf.
unidcdf - Discrete uniform cdf.
unifcdf - Uniform cdf.
weibcdf - Weibull cdf.
Critical Values of Distribution functions.
betainv - Beta inverse cumulative distribution function.
binoinv - Binomial inverse cumulative distribution function.
chi2inv - Chi square 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.
hygeinv - Hypergeometric inverse cumulative distribution function.
icdf - Specified inverse cdf.
logninv - Lognormal inverse cumulative distribution function.
nbininv - Negative binomial inverse distribution function.
ncfinv - Noncentral F inverse cumulative distribution function.
nctinv - Noncentral t inverse cumulative distribution function.
ncx2inv - Noncentral Chi-square inverse distribution function.
norminv - Normal (Gaussian) inverse cumulative distribution function.
poissinv - Poisson inverse cumulative distribution function.
raylinv - Rayleigh inverse cumulative distribution function.
tinv - T inverse cumulative distribution function.
unidinv - Discrete uniform inverse cumulative distribution function.
unifinv - Uniform inverse cumulative distribution function.
weibinv - Weibull inverse cumulative distribution function.
Random Number Generators.
betarnd - Beta random numbers.
binornd - Binomial random numbers.
chi2rnd - Chi square random numbers.
exprnd - Exponential random numbers.
frnd - F random numbers.
gamrnd - Gamma random numbers.
geornd - Geometric random numbers.
hygernd - Hypergeometric random numbers.
lognrnd - Lognormal random numbers.
mvnrnd - Multivariate normal 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 (Gaussian) random numbers.
poissrnd - Poisson random numbers.
random - Random numbers from specified distribution.
raylrnd - Rayleigh random numbers.
trnd - T random numbers.
unidrnd - Discrete uniform random numbers.
unifrnd - Uniform random numbers.
weibrnd - Weibull random numbers.
Statistics.
betastat - Beta mean and variance.
binostat - Binomial mean and variance.
chi2stat - Chi square mean and variance.
expstat - Exponential mean and variance.
fstat - F mean and variance.
gamstat - Gamma mean and variance.
geostat - Geometric 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 (Gaussian) mean and variance.
poisstat - Poisson mean and variance.
raylstat - Rayleigh mean and variance.
tstat - T mean and variance.
unidstat - Discrete uniform mean and variance.
unifstat - Uniform mean and variance.
weibstat - Weibull mean and variance.
Descriptive Statistics.
bootstrp - Bootstrap statistics for any function.
corrcoef - Correlation coefficient.
cov - Covariance
crosstab - Cross tabulation.
geomean - Geometric mean.
grpstats - Summary statistics by group.
harmmean - Harmonic mean.
iqr - Interquartile range.
kurtosis - Kurtosis.
mad - Median Absolute Deviation.
mean - Sample average
median - 50th percentile of a sample.
moment - Moments of a sample.
nanmax - Maximum ignoring NaNs.
nanmean - Mean ignoring NaNs.
nanmedian - Median ignoring NaNs.
nanmin - Minimum ignoring NaNs.
nanstd - Standard deviation ignoring NaNs.
nansum - Sum ignoring NaNs.
prctile - Percentiles.
range - Range.
skewness - Skewness.
tabulate - Frequency table.
trimmean - Trimmed mean.
var - Variance.
Linear Models.
anova1 - One-Way Analysis of Variance.
anova2 - Two-Way Analysis of Variance.
dummyvar - Dummy-variable coding.
leverage - Regression diagnostic.
lscov - Least-squares estimates with known covariance matrix.
polyfit - Least-squares polynomial fitting.
polyval - Predicted values for polynomial functions.
regress - Multivariate linear regression.
regstats - Regression diagnostics.
ridge - Ridge regression.
rstool - Multidimensional response surface visualization (RSM).
stepwise - Interactive tool for stepwise regression.
x2fx - Factor settings matrix (x) to design matrix (fx).
Nonlinear Models
nlinfit - Nonlinear least-squares data fitting (Newton's method).
nlintool - Interactive graphical tool for prediction in nonlinear models.
nlpredci - Confidence intervals for prediction.
nlparci - Confidence intervals for parameters.
nnls - Non-negative least-squares.
Design of Experiments (DOE)
cordexch - D-optimal design (coordinate exchange algorithm).
daugment - Augment D-optimal design.
dcovary - D-optimal design with fixed covariates.
ff2n - Two-level full-factorial design.
fullfact - Mixed-level full-factorial design.
hadamard - Hadamard matrices (orthogonal arrays).
rowexch - D-optimal design (row exchange algorithm).
Statistical Process Control (SPC)
capable - Capability indices.
capaplot - Capability plot.
ewmaplot - Exponentially weighted moving average plot.
histfit - Histogram with superimposed normal density.
normspec - Plot normal density between specification limits.
schart - S chart for monitoring variability.
xbarplot - Xbar chart for monitoring the mean.
Principal Components Analysis
barttest - Bartlett's test for dimensionality.
pcacov - Principal components from covariance matrix.
pcares - Residuals from principal components.
princomp - Principal components analysis from raw data.
Multivariate Statistics.
classify - Linear Discriminant Analysis.
mahal - Mahalanobis distance.
Hypothesis Tests.
ranksum - Wilcoxon rank sum test (independent samples).
signrank - Wilcoxon sign rank test (paired samples).
signtest - Sign test (paired samples).
ztest - Z test.
ttest - One sample t test.
ttest2 - Two sample t test.
Statistical Plotting.
boxplot - Boxplots of a data matrix (one per column).
fsurfht - Interactive contour plot of a function.
gline - Point, drag and click line drawing on figures.
gname - Interactive point labelling in x-y plots.
lsline - Add least-square fit line to scatter plot.
normplot - Normal probability plot.
qqplot - Quantile-Quantile plot.
refcurve - Reference polynomial curve.
refline - Reference line.
surfht - Interactive contour plot of a data grid.
weibplot - Weibull probability plot.
Statistics Demos.
disttool - GUI tool for exploring probability distribution functions.
polytool - Interactive graph for prediction of fitted polynomials.
randtool - GUI tool for generating random numbers.
rsmdemo - Reaction simulation (DOE, RSM, nonlinear curve fitting).
File Based I/O
tblread - Read in data in tabular format.
tblwrite - Write out data in tabular format to file.
caseread - Read in case names.
casewrite - Write out case names to file.
For more help on directory/topic, type "help topic".
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