A rudimentary statistics toolbox. Scilab Version 1.2.2 Copyright (c) Anders Holtsberg. Comments and suggestions to andersh@maths.lth.se. and jpc@cermics.enpc.fr for the scilab version
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. dnorm - Normal density function. dt - Student t 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. pks - Kolmogorov Smirnov distribution function. pnorm - Normal distribution function. pt - Student t cdf. 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. qnorm - Normal inverse distribution function. qt - Student t inverse distribution function. rbeta - Random numbers from the beta distribution. rbinom - Random numbers from the binomial distribution. rchisq - Random numbers from the chisquare distribution. rexpweib - Random numbers from the exp and weibull distributions. rf - Random numbers from the F distribution 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 (use randn instead). rpoiss - Random random numbers from the poisson distribution. rt - Random numbers from the student t distribution. simulation of random variate by reject method rjbinom.m - Random numbers from the binomial distribution. rjgamma.m - Random numbers from the gamma distribution. rjpoiss.m - Random random numbers from the poisson distribution. Logistic regression. logitfit - Fit a logistic regression model. lodds - Log odds function. loddsinv - Inverse of log odds function. Various functions. bincoef - Binomial coefficients. getdata - Some famous multivariate data sets. quantile - Empirical quantile (percentile). Tests, confidence intervals, and model estimation. cmpmod - Compare small linear model versus large one. ciquant - Nonparametric confidence interval for quantile. kstwo - Smirnov test for two samples. lsfit - Fit a least squares model. lsselect - Select a predictor subset for regression. test1n - Tests and confidence intervals, one normal sample. test2n - Tests and confidence intervals, two normal samples. Graphics. qqnorm - Normal probability paper. qqplot - Plot empirical quantile vs empirical quantile. linreg - Linear or polynomial regression, including plot. histo - Plot a histogram (alternative to hist). plotsym - Plot with symbols. plotdens - Draw a nonparametric density estimate. identify - Identify points on a plot by clicking with the mouse. pairs - Pairwise scatter plots.