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Introduction
This library is a port of Larry Hunter's Lisp statistics library to chicken scheme.
The library provides a number of formulae and methods taken from the book "Fundamentals of Biostatistics" by Bernard Rosner (5th edition).
Provided Functions
Utilities
- average-rank
- beta-incomplete
- bin-and-count
- combinations
- factorial
- find-critical-value
- fisher-z-transform
- gamma-incomplete
- gamma-ln
- permutations
- random-normal
- random-pick: +(random-pick items)+ returns a random item from +items+
- random-sample
- sign
- square
Descriptive statistics
- mean
- median
- mode
- geometric-mean
- range
- percentile
- variance
- standard-deviation
- coefficient-of-variation
- standard-error-of-the-mean
- mean-sd-n
Distributional functions
- binomial-probability
- binomial-cumulative-probability
- binomial-ge-probability
- binomial-le-probability
- poisson-probability
- poisson-cumulative-probability
- poisson-ge-probability
- 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-sequence
- normal-variance-ci
- normal-variance-ci-on-sequence
- normal-sd-ci
- normal-sd-ci-on-sequence
Hypothesis testing
(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
- f-test
- chi-square-test-one-sample
- binomial-test-one-sample
- binomial-test-two-sample
- fisher-exact-test
- mcnemars-test
- poisson-test-one-sample
(non parametric)
- sign-test
- sign-test-on-sequence
- wilcoxon-signed-rank-test
- wilcoxon-signed-rank-test-on-sequences
- 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
- correlation-test-two-sample-on-sequences
- spearman-rank-correlation
Significance test functions
- t-significance
- f-significance
Authors
Peter Lane wrote the scheme version of this library. The original Lisp version was written by Larry Hunter.
License
GPL version 3.0.
Requirements
Needs srfi-1, srfi-25, srfi-69, vector-lib, numbers, extras, foreign, format
Uses the GNU scientific library for basic numeric processing, so requires libgsl, libgslcblas and the development files for libgsl.
Version History
trunk, for testing