Changeset 20606 in project
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 10/03/10 13:49:28 (10 years ago)
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wiki/eggref/4/statistics
r20605 r20606 1 == Statistics 2 1 3 Still under testing! 2 4 3 == Introduction5 === Introduction 4 6 5 7 This library is a port of [[http://compbio.ucdenver.edu/hunter/Larry Hunter]]'s Lisp statistics library to chicken scheme. … … 7 9 The library provides a number of formulae and methods taken from the book "Fundamentals of Biostatistics" by Bernard Rosner (5th edition). 8 10 9 === Statistical Distributions11 ==== Statistical Distributions 10 12 11 13 To use this library, you need to understand the underlying statistics. In brief: … … 17 19 The [[http://en.wikipedia.org/wiki/Normal_distributionNormal distribution]] is used for realvalued events which cluster around a specific mean with a symmetric variance. A typical example would be the distribution of people's heights. A normal distribution is defined N(mean, variance). 18 20 19 == Provided Functions20 21 === Utilities21 === Provided Functions 22 23 ==== Utilities 22 24 23 25 <procedure>(averagerank value sortedvalues)</procedure> … … 65 67 <procedure>(square n)</procedure> 66 68 67 === Descriptive statistics69 ==== Descriptive statistics 68 70 69 71 These functions provide information on a given list of numbers, the {{items}}. Note, the list does not have to be sorted. … … 121 123 4 122 124 123 === Distributional functions125 ==== Distributional functions 124 126 125 127 <procedure>(binomialprobability n k p)</procedure> … … 255 257 * chisquarecdf 256 258 257 === Confidence intervals259 ==== Confidence intervals 258 260 259 261 These functions report bounds for an observed property of a distribution: the bounds are tighter as the confidence level, alpha, varies from 0.0 to 1.0. … … 299 301 returns two values, the upper and lower bounds on the standard deviation of the given {{items}}, assuming they are normally distributed; the bound is for confidence {{(1alpha)}}. 300 302 301 === Hypothesis testing302 303 ==== (parametric)303 ==== Hypothesis testing 304 305 ===== (parametric) 304 306 305 307 * ztest … … 319 321 * poissontestonesample 320 322 321 ==== (non parametric)323 ===== (non parametric) 322 324 323 325 * signtest … … 328 330 * chisquaretestfortrend 329 331 330 === Sample size estimates332 ==== Sample size estimates 331 333 332 334 * ttestonesamplesse … … 338 340 * correlationsse 339 341 340 === Correlation and regression342 ==== Correlation and regression 341 343 342 344 * linearregression … … 346 348 * spearmanrankcorrelation 347 349 348 === Significance test functions350 ==== Significance test functions 349 351 350 352 * tsignificance … … 352 354 353 355 354 == Authors356 === Authors 355 357 356 358 [[http://wiki.callcc.org/users/peterlanePeter Lane]] wrote the scheme version of this library. The original Lisp version was written by [[http://compbio.ucdenver.edu/hunter/Larry Hunter]]. 357 359 358 == License360 === License 359 361 360 362 GPL version 3.0. 361 363 362 == Requirements364 === Requirements 363 365 364 366 Needs srfi1, srfi25, srfi69, vectorlib, numbers, extras, foreign, format … … 366 368 Uses the GNU scientific library for basic numeric processing, so requires libgsl, libgslcblas and the development files for libgsl. 367 369 368 == Version History370 === Version History 369 371 370 372 trunk, for testing
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