Purpose
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Stixbox is a statistics toolbox which provides distribution functions, datasets,
statistical tests and plotting facilities.
Features
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* Probability Distribution Functions
* pbeta : The beta cumulative distribution function
* pbinom : The binomial cumulative probability function
* pchisq : The chisquare distribution function
* pf : The F (or Fisher Snedecor) cumulative distribution function
* pgamma : The gamma cumulative distribution function
* phypg : The hypergeometric cumulative probability function
* pks : Kolmogorov Smirnov distribution function
* pnorm : The normal cumulative distribution function
* pt : The Student t cumulative distribution function
* Datasets
* getdata : Famous datasets
* Graphics
* histo : plot a histogram
* identify : Identify points on a plot by clicking with the mouse
* linreg : Linear or polynomial regression
* pairs : Pairwise scatter plots
* plotdens : Draw a nonparametric density estimate
* plotsym : Plot with symbols
* qqnorm : Normal probability paper
* qqplot : Plot empirical quantile vs empirical quantile
* Inverse Cumulated Distribution Functions
* qbeta : The beta inverse distribution function
* qbinom : The binomial inverse cdf
* qchisq : The chisquare inverse distribution function
* qf : The F (or Fisher-Snedecor) inverse distribution function
* qgamma : The gamma inverse distribution function
* qhypg : The hypergeometric inverse cdf
* qnorm : The normal inverse distribution function
* qt : The student t inverse distribution function
* Logistic Regression
* lodds : Log odds function
* loddsinv : inverse of log odd
* logitfit : Fit a logistic regression model
* Miscellaneous
* betainc : Incomplete beta function
* betaln : Logarithm of beta function
* bincoef : Binomial coefficients
* ciboot : Various bootstrap confidence intervals
* cov : Covariance matrix
* covboot : Bootstrap estimate of the variance of a parameter estimate
* covjack : Jackknife estimate of the variance of a parameter estimate
* gammainc : The incomplete gamma function
* polyfit : Polynomial curve fitting
* polyval : Polynomial evaluation
* quantile : Empirical quantile (percentile).
* std : Standard deviation
* stdboot : Bootstrap estimate of the parameter standard deviation
* stdjack : Jackknife estimate of the standard deviation of a parameter
estimate
* Probability Distribution Functions
* dbeta : The beta density function
* dbinom : The binomial probability function
* dchisq : The chisquare density function
* df : The F density function
* dgamma : The gamma density function
* dhypg : The hypergeometric probability function
* dnorm : The normal density function
* dt : The student t density function
* Random Numbers
* rbeta : Random numbers from the beta distribution
* rbinom : Random numbers from the binomial distribution (inversion method)
* rboot : Simulate a bootstrap resample from a sample
* rchisq : Random numbers from the chisquare distribution
* rexpweib : Random numbers from the exponential or weibull distributions
* rf : Random numbers from the F distribution (inversion method)
* rgamma : Random numbers from the gamma distribution
* rgeom : Random numbers from the geometric distribution
* rhypg : Random numbers from the hypergeometric distribution
* rnorm : Normal random numbers
* rpoiss : Random numbers from the poisson distribution
* rt : Random numbers from the student t distributio
* Reject Methods
* rjbinom : Random numbers from the binomial distribution (reject method)
* rjgamma : Generates gamma random deviates
* rjpoiss : Random numbers from the poisson distributio
* Tests, confidence intervals and model estimation
* ciquant : Nonparametric confidence interval for quantile
Forge
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http://forge.scilab.org/index.php/p/stixbox/admin/