The VD shall enable the user to select StatCalc calculators from the Options menu.When the user selects a calculator from the StatCalc menu, each calculator shall open a window containing the components specified in StatCalc Calculator Properties, below.The StatCalc menu shall enable the user to start the eight (8) StatCalc calculators from an array of buttons bearing the names of the calculators.Epi Info™ 7 shall enable the user to open the StatCalc menu from the Epi Info ™ main menu.However, calculators placed on the dashboard cannot be saved with the canvas, nor can their output be exported or printed with the other analysis gadgets. As StatCalc calculators do not access data records and process only data entered manually by the user, calculators can be added to a canvas without having to first attach a data source. In VD, the calculators can be accessed from the Options menu, under the "Add StatCalc calculator" submenu, and added to the dashboard Canvas in the same manner as other gadgets. The individual calculators are also part of Visual Dashboard (VD). StatCalc appears on the Epi Info™ 7 main menu, middle row, right column, and is captioned "Statistical calculators for sample size, power, and more." Clicking on StatCalc in the main menu opens the StatCalc menu, which is similar to the main menu in appearance and contains buttons for the eight (8) StatCalc calculators listed in StatCalc Calculator Properties, below. The StatCalc tools can be accessed as an independent module from the main menu or as part of the Visual Dashboard. distribution-based event probabilities, 2-tailed p-values and confidence intervals for deviations from binomial (proportions) and Poisson (rare events) distributions given the number of observed and expected events. analysis of 2×2 tables to produce odds ratios and risk ratios (relative risks) with confidence limits, Fisher exact tests, and 1- and 2-tailed p-values, with Mantel-Haenszel summary odds ratios, chi square tests and associated p-values for stratified data 3).
STATCALC ONLINE SERIES
sample size and power calculations for unmatched case-control studies, population surveys, cohort or cross-sectional studies, chi-square for trend by the Mantel extension of the Mantel-Haenszel summary odds ratio, and chi square (tests for the presence of a trend in dose-response or other case-control studies where a series of increasing or decreasing exposures is being studied) 2). StatCalc tools can be divided into three broad categories: 1). It also includes some nonparametric distributions, and six chapters under miscellaneous section including tolerance factor for normal distribution and distribution of the sample correlation coefficient.The StatCalc component of Epi Info™ 7 enables the user to evaluate the performance of different study designs and statistical tests by supplying high-level information on the properties of hypothetical data sets and the criteria used for evaluation. The StatCalcTM is a dialog-based application, and it can be executed along with other applications.
To facilitate the use of tables, description is given for each distribution.
STATCALC ONLINE SOFTWARE
The software that computes the table values and moments is referred to as StatCalcTM. Examples are provided mainly for this purpose. With practitioners and researchers in disciplines other than statistics in mind, the author has adopted a format intended to make it simple to use the book for reference purposes. The book and the software are intended to serve as reference materials. The main purpose of this book and the software is to provide users with quick and easy access to table values, important formulas and results of statistical distributions. The following topics are covered, where appropriate, for each distribution:ĭescription Plots of pdfs Moments Inference Properties and Results Methods of Computing Probability and Percentiles Algorithms for Random Number Generation Illustrative Examples and /or Practical Situations This book covers 37 distributions including many commonly used as well as some specialized distributions.
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