SIMSTAT 0.92b (Beta version) Septembre 21, 1991 Designed and written by Normand P‚ladeau Douglas Hospital Research Centre 6875, Lasalle Blvd Verdun, P.Q., Canada H4H 1R3 Copyright (C) N. P‚ladeau USERS NEEDED ------------ This program is a beta version of a basic statistics and simulation program (bootstrap simulation analysis will be available in the final version). It is fully functional but may contain a few bugs and some design flaws. In order to identify and fix them, I have decide to distribute it through bulletin boards to interested users. I you use it and encountered any problem, please let me know by providing me step-by-step instructions on how to reproduce the problem, and, if necessary, the data set you were running. Also, if you have questions, comments or suggestions about this program don't hesitate to contact me (addresses at the end of this file). The current version of this program is being distributed as user-supported software. If you find this program to be of value, a voluntary contribution would be appreciated. All contributors will be notified of updates and new releases of the program as they become available. A contribution of $20 or more will entitle you to a free upgrade. All users who contribute significantly to the final revision of the program, by their comments and suggestions, will also receive a free upgrade and will be notified of program updates and product releases. FILES YOU SHOULD HAVE --------------------- Before you start working with SIMSTAT, take a few moments to check the content of the archived file. The program should include 8 files: 1 text file README.TXT -- This file. 3 files for the main program SIMSTAT.EXE -- The simstat statistical program. SIMSTAT.DEF -- The simstat default configuration file. SIMSTAT.HLP -- The simstat help file. 4 sample data files SAMPLE.DAT -- A sample Ascii data file. SAMPLE.SYS -- A SPSS/PC+ system file. SAMPLE.DBF -- A Dbase III data file SAMPLE.WKS -- A Lotus data file. 1 utility file EXPAND.EXE -- A program to uncompressed listing files INSTALLING AND RUNNING THE PROGRAM ---------------------------------- To install the program, simply copy all the files to the destination disk or directory. There are three command line options that can be used with SIMSTAT: /M or -M Force monochrome color set on a computer with a color card. /E or -E Display 43 lines on an EGA or 50 lines on a VGA monitor. /C or -C Save the listing file in a compressed format. This option is useful for saving disk space when running on a laptop. The listing file will take up to 75% less disk space. You must use the EXPAND.EXE utility to uncompress the listing file. PROGRAM MAINS FEATURES ---------------------- SIMSTAT is a menu driven statistical program that provide many basic descriptive and comparative statistics. o Summary statistics (mean, variance, standard deviation, etc.) o Crosstabulation - normal crosstabulation and inter-raters agreement table - nominal statistics - ordinal statistics - inter-raters agreement statistics o Frequencies analysis including: - frequencies table - barchart - histogram - descriptive statistics - percentile table o Breakdown analysis o Oneway analysis of variance o Paired and independent sample t-tests o Pearson correlation matrix, covariance and cross product deviation o Regression analysis including: - X and Y scatterplot - regression equation - residual plot o Nonparametric analysis including: - Mann-Whitney U test - Wilcoxon T-test - Sign test - Kruskall-Wallis ANOVA - Kolmogorov-Smirnov test for 2 samples - Moses test of extreme reactions - Median test (2 or more samples) o nonparametric association matrix including - Spearman's R - Sommer's D, Dxy and Dyx - Goodman Kruskall's Gamma - Kendall's Tau-a, Tau-b - Kendall Stuart's Tau-c PROGRAM SPECIAL FEATURES (will be included in the final version) ------------------------ The final version of SIMSTAT will also provide bootstrap simulation analysis base on resampling procedure for 7 univariate and 20 bivariate estimators. The program output will allow the examination of the estimator distribution in various format including: - descriptive statistics - frequency table - histogram - percentile table - Type I or Type II error rates (power estimate) for three alpha level (0.10, 0.05 and 0.01). INPUT AND OUTPUT ---------------- The data may be entered directly from the keyboard or may be read directly from a dBase file (version III or IV), a LOTUS 1-2-3 file, a SPSS/PC+ file or from a ASCII data file. The keyboard entry may be saved for later analysis. The output can be read on the screen, save on disk in a listing file, and/or send directly to the printer. CAPABILITY ---------- The program can handle up to 500 variables and 30,000 cases. The simulation can contain between 100 and 20000 sub-sampling or permutation. Those limitations are the absolute maximum and can be somewhat lower depending on the amount of memory available. SYSTEM REQUIREMENTS ------------------- SIMSTAT will run on any IBM PC/XT, AT, PS/2 and compatible under MS-DOS/PC-DOS version 2.0 or higher. A minimum of 356K of free RAM is necessary. The program does not need a numeric coprocessor but will use it if available. A coprocessor is highly recommended for extensive bootstrap simulation with large samples. SIMSTAT take less than 110K of disk space (including the help file). It can easily be run on a system with a single 360K disk drive or on a LAPTOP computer. CREDIT ------ IBM-PC/XT, AT and PS/2, PC-DOS are trademarks of International Business Machines MS-DOS is a registered trademark of Microsoft Corporation. SPSS/PC+ is a registered trademark of SPSS Inc. DBASE III and IV are trademarks of Ashton-Tate. LOTUS is a trademark of Lotus Corp. RELEASE HISTORY --------------- 0.92 09-21-91 Fixed problem with large number overlapping. Fixed problem with the computation of the mode. Added option for user defined confidence intervals in regression and anova analysis. The "." caracter in ASCII files is now treated as a missing value. Added automatic decimal adjustment for very small numbers. Improved algorithm for choosing scatterplot scaling. More typographical errors corrected. 0.91 06-25-91 Fixed problem with printer error message. Fixed problem with reading Lotus file. Added option to eliminate the beep. REGRESSION procedure now includes an anova, standard error and confidence interval of the slope and the intercept. Help file corrected. 0.90 06-14-91 First public release. DISTRIBUTION ------------ Since SIMSTAT 0.9 (beta) is a shareware product, you are encouraged to experiment with it and share it with your friends as long as the following provisions are met: 1) It is distributed ONLY in its original, unmodified form. 2) No fee is charged for copying or distribution without permission by the author. You can contact the author by writing to the following addresses: By mail: Normand P‚ladeau Unit‚ de Recherche Psychosociale Douglas Hospital Centre 6845 Lasalle Blvd. Verdun, QC CANADA By electronic mail via CompuServe: Normand Peladeau User# [71760,2103]