# STIXBOX

```A statistics toolbox for Matlab and Octave.
Version 1.29, 10-May-2000
GNU Public Licence Copyright (c) Anders Holtsberg.

Distribution functions.
dbeta     - Beta density function.
dbinom    - Binomial probability function.
dchisq    - Chisquare density function.
df        - F density function.
dgamma    - Gamma density function.
dhypg     - Hypergeometric probability function.
dlognorm  - The log-normal density function.
dnorm     - Normal density function.
dt        - Student t density function.
dweib     - The Weibull density function.
dgumbel   - The Gumbel density function.

pbeta     - Beta distribution function.
pbinom    - Binomial cumulative probability function.
pchisq    - Chisquare distribution function.
pf        - F distribution function.
pgamma    - Gamma distribution function.
phypg     - Hypergeometric cumulative probability function.
plognorm  - The log-normal distribution function.
pnorm     - Normal distribution function.
pt        - Student t cdf.
pweib     - The Weibull distribution function.
pgumbel   - The Gumbel distribution function.

qbeta     - Beta inverse distribution function.
qbinom    - Binomial inverse cdf.
qchisq    - Chisquare inverse distribution function.
qf        - F inverse distribution function.
qgamma    - Gamma inverse distribution function.
qhypg     - Hypergeometric inverse cdf.
qlognorm  - The inverse log-normal distribution function.
qnorm     - Normal inverse distribution function.
qt        - Student t inverse distribution function.
qweib     - The Weibull inverse distribution function.
qgumbel   - The Gumbel inverse distribution function.

rbeta     - Random numbers from the beta distribution.
rbinom    - Random numbers from the binomial distribution.
rchisq    - Random numbers from the chisquare distribution.
rf        - Random numbers from the F distribution
rgamma    - Random numbers from the gamma distribution.
rhypg     - Random numbers from the hypergeometric distribution.
rlognorm  - Log-normal random numbers.
rnorm     - Normal random numbers (use randn instead).
rt        - Random numbers from the student t distribution.
rweib     - Random numbers from the Weibull distribution.
rgumbel   - Random numbers from the Gumbel distribution.

Logistic regression.
ldiscrim  - Compute a linear discriminant and plot the result.
logitfit  - Fit a logistic regression model.
lodds     - Log odds function.
loddsinv  - Inverse of log odds function.

Various functions.
bincoef   - Binomial coefficients.
cat2tbl   - Take category data and produce a table of counts.
getdata   - Some famous multivariate data sets.
quantile  - Empirical quantile (percentile).
ranktrf   - Rank transform data.
spearman  - Spearman's rank correlation coefficient.
stdize    - Standardize columns to have mean 0 and standard deviation 1.
corr      - Correlation coefficient.
cvar      - Covariance.

Resampling methods.
covjack   - Jackknife estimate of the variance of a parameter estimate.
covboot   - Bootstrap estimate of the variance of a parameter estimate.
stdjack   - Jackknife estimate of the parameter standard deviation.
stdboot   - Bootstrap estimate of the parameter standard deviation.
rboot     - Simulate a bootstrap resample from a sample.
ciboot    - Bootstrap confidence interval.
test1b    - Bootstrap t test and confidence interval for the mean.

Tests, confidence intervals, and model estimation.
cmpmod    - Compare small linear model versus large one.
contincy  - Test for contigency table row-column independence.
ciquant   - Nonparametric confidence interval for quantile.
lsfit     - Fit a least squares model.
lsselect  - Select a predictor subset for regression.
test1n    - Tests and confidence intervals, one normal sample.
test1r    - Test for median equals 0 using rank test.
test2n    - Tests and confidence intervals, two normal samples.
test2r    - Test for equal location of two samples using rank test.
normmix   - Estimate a mixture of normal distributions.

Graphics.
qqgamma   - Gamma probability paper plot (and estimate).
qqnorm    - Normal probability paper plot.
qqplot    - Plot empirical quantile vs empirical quantile.
qqweib    - Weibull probability paper plot.
qqgumbel  - Gumbel probability paper plot.
kaplamai  - Plot Kaplan-Maier estimate of survivor function.
linreg    - Linear or polynomial regression, including plot.
histo     - Plot a histogram (alternative to hist).
plotsym   - Plot with symbols.
plotdens  - Draw a nonparametric density estimate.
plotempd  - Plot empirical distribution.
identify  - Identify points on a plot by clicking with the mouse.
pairs     - Pairwise scatter plots.
```