lh-description.text

This is Larry Hunters statistics library.  It is a single file
system with no dependencies.  The formulas and methods used are
largely taken from Bernard Rosner, *Fundamentals of Biostatistics*,
5th edition.  "Rosner x" is a page number.  Some numeric functions
were taken from CLASP, a 1994 common lisp package that implemented
some of the statistical functions from "Numeric recipes in C".

Functions provided:

Descriptive statistics
 Mean, median, mode, geometric mean, range, percentile, variance,
 standard-deviation (sd), coefficient-of-variation,
 standard-error-of-the-mean

Distributional functions
 Poisson & Binomial
  binomial-probability, binomial-cumulative-probability,
  binomial-ge-probability, poisson-probability,
  poisson-cumulative-probability, poisson-ge-probability, Normal
  normal-pdf, convert-to-standard-normal, phi, z, t-distribution,
  chi-square, chi-square-cdf

Confidence Intervals

 binomial-probability-ci, poisson-mu-ci, normal-mean-ci,
 normal-mean-ci-on-sequences, normal-variance-ci,
 normal-variance-ci-on-sequence, normal-sd-ci

Hypothesis tests (parametric)
 z-test, z-test-on-sequence, t-test-one-sample,
 t-test-one-sample-on-sequence, t-test-paired,
 t-test-paired-on-sequences, t-test-two-sample,
 t-test-two-sample-on-sequences, chi-square-test-one-sample, f-test,
 binomial-test-one-sample, binomial-test-two-sample, fisher-exact-test,
 mcnemars-test, poisson-test-one-sample

Hypothesis tests (non-parametric)
 sign-test, sign-test-on-sequence, wilcoxon-signed-rank-test,
 chi-square-test-rxc, chi-square-test-for-trend

Sample size estimates
 t-test-one-sample-sse, t-test-two-sample-sse
 t-test-paired-sse, binomial-test-one-sample-sse,
 binomial-test-two-sample-sse,
 binomial-test-paired-sse, correlation-sse

Correlation and Regression
 linear-regression, correlation-coefficient,
 correlation-test-two-sample, spearman-rank-correlation

Significance test functions
 t-significance, f-significance (chi square significance is calculated
 from chi-square-cdf in various ways depending on the problem).

Utilities
 random-pick, bin-and-count, fishers-z-transform,
 mean-sd-n, square, choose, permutations, round-float