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basic-stats(1) General Commands Manual basic-stats(1) NAME basic-stats - Command-line statistics made trivial SYNOPSIS basic-stats z-score x mean stddev basic-stats z-cdf z-score [mean stddev] (defaults: 0 1) basic-stats t-score x-bar expected-mean stddev n basic-stats [--verbose] [--delim string] \ function1 [param1] --row|--col N \ [function2 ...] OPTIONS --verbose Echo input data during processing --delim string Use string as a set of delimiters instead of the default " \t" --row N Compute statistics for row N (1-based) of the input --col N Compute statistics for column N (1-based) of the input mean --row|--col N Compute the mean (average) for row/column N quantile partitions --row|--col N Compute the low, high, and quantiles for row/column N median --row|--col N Compute the low, high, and median for row/column N. Identical to quantile 2 --row|--col N. quartile --row|--col N Identical to quantile 4 --row|--col N. pop-var --row|--col N Report population variance pop-stddev --row|--col N Report population standard deviation pop-z-scores --row|--col N Report population z-scores sample-var --row|--col N Report sample variance sample-stddev --row|--col N Report sample standard deviation sample-z-scores --row|--col N Report sample z-scores. Should only be used for sample sizes of 30 or more. Otherwise, use sample-t-score. sample-stderr --row|--col N Report sample standard error (sigma-x-bar = stddev / sqrt(n)) sample-t-score --row|--col N Report t-score for sample data. mode --row|--col N Report mode range --row|--col N Report range iq-range --row|--col N Report interquartile range PURPOSE Basic-stats is a program for quickly computing statistics on tabular data from the command-line. It elimintes the nuisance of importing data into a spreadsheet or writing custom scripts in order to gather basic statistics. DESCRIPTION Basic-stats computes common statistics such as mean, median, etc. on rows and/or columns of tabular data. It can compute multiple functions on multiple rows and/or columns in a single pass through the input stream. The default delimiter is either a single TAB or multiple space charac- ters. Alternate delimiters, such as a comma, can be specified using, e.g. --delim ','. Quantiles are computed using a generalized interpolation formula (method 4 from the Wikipedia page on quartiles). The output format is designed to be both human-readable and easily parsed by command-line tools and scripts. Basic-stats is written entirely in C for maximal performance. Memory use is trivial for many functions, but some computations such as quan- tiles which involve sorting the data require the use of arrays. EXAMPLES > cat sample.txt 1 5 21 2 12 22 3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 > basic-stats mean --col 1 median --row 2 quantile 4 --col 3 < sample.txt Col 1 mean 5.500000 Row 2 low 2.000000 Row 2 quantile(0.50) 12.000000 Row 2 high 22.000000 Col 3 low 21.000000 Col 3 quantile(0.25) 22.750000 Col 3 quantile(0.50) 25.500000 Col 3 quantile(0.75) 28.250000 Col 3 high 30.000000 SEE ALSO awk(1), R(1) BUGS Please report bugs to the author and send patches in unified diff for- mat. (man diff for more information) AUTHOR J. Bacon basic-stats(1)
NAME | SYNOPSIS | OPTIONS | PURPOSE | DESCRIPTION | EXAMPLES | SEE ALSO | BUGS | AUTHOR
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