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The Free Statistics Calculators Website - Home

Welcome to version 3.0 of the Free Statistics Calculators website! These statistics calculators are free to be used by anyone in the research community at large. They are offered humbly in the hope that they will contribute in some small way to the advancement of science and the betterment of mankind. I hope you find them useful! The statistics calculators are organized into the 29 categories shown below. Clicking on a category name will display a list of calculators available for that category.

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Statistica Online Textbook "Thank you and thank you again for providing a complete, well-structured, and easy-to-understand online resource. Every other website or snobbish research paper has not deigned to explain things in words consisting of less than four syllables. I was tossed to and fro like a man holding on to a frail plank that he calls his determination until I came across your electronic textbook...You have cleared the air for me.

Qualitative Data Analysis Software Computer Assisted Qualitative Data Analysis Software, CAQDAS--i.e. the application of qualitative data analysis software--has become very common among qualitative researchers nowadays. The first attempts at creating something resembling what we know today as qualitative data analysis software were made in the 60s, but it was not until the 80s and early 90s when they began to be widely recognized in the field of qualitative analysis. Today the use of software to assist qualitative analysts is decidely a must, and although there is a considerable range of programs to choose from, not many of them provide the professional researcher with a full complement of all the tools required for the complex tasks involved in the analysis of qualitative data material. While each one of the multitude includes specific tools for the handling and storage of different qualitative data, some of them can work only with text; the better ones can handle images, sound and video.

Sample Size Calculator - Confidence Level, Confidence Interval, Sample Size, Population Size, Relevant Population - Creative Research Systems This Sample Size Calculator is presented as a public service of Creative Research Systems survey software. You can use it to determine how many people you need to interview in order to get results that reflect the target population as precisely as needed. You can also find the level of precision you have in an existing sample. Before using the sample size calculator, there are two terms that you need to know.

Statistical Tables Calculator Calculators for Statistical Table Entries z to P Calculator For any given value of z, this section will calculate º the respective one-tailed probabilities of — z and +z; Statistics Tables Back to Homepage for homework help in math & statistics by email or chat. Statistical Calculator Z-Table, T-table, Chi-squared table, C4 table Much faster and more accurate than looking it up in a book! Great for homework or an online statistics class. So easy it's almost cheating! Table 1: Standard Normal Distribution

Mean, Median, Mode, and Range Purplemath Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all. The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. MINITAB Project 4 PURPOSE - to use MINITAB to determine the sample meandetermine the sample standard deviation and the sample variance determine the sample mediandetermine the sample mode for ungrouped datadetermine the sample quartiles investigate some properties of sample statisticsinvestigate consistent estimatorsinvestigate unbiased estimators The sample mean for a sample of size n is obtained by adding together the values in the data set and dividing by the sample size n. The population mean for a finite population of size N is obtained by adding together the values in the data set and dividing by the population size N.

CRC Press Online - Book: A Handbook of Statistical Analyses Using R, Second Edition Features Shows how to obtain informative graphical output using R Provides R code so readers can perform their own analyses Word Clouds; Tag Clouds. Which is the best software? « Seeing the Meaning Terry Freedman produces ‘Computers in Classrooms’, an invaluable newsletter for all concerned with ICT. In the April 2010 issue he evaluates a number of programs that generate word clouds. You can sign up for a free subscription to ‘Computers in Classrooms’ at A Tutorial on Spreadsheet Optimization This page introduces some of the principles upon which the Solver is built: The types of problems that can be solved; typical applications of the Solver; how to construct Solver models; and practical hints for using the Solver effectively. For an alternative, introductory tutorial that takes you step by step through the process of solving a sample model with the Microsoft Excel Solver, try the University of British Columbia's MBA program online tutorial for the Solver. What Can the Solver Do?

SPSS Starter Kit SPSS Starter Kit This page is intended for people who: These materials have been collected from various places on our website and have been ordered so that you can, in step-by-step fashion, develop the skills needed to conduct common analyses in SPSS. Although SPSS has a very nice point-and-click interface, we suggest that you learn to use SPSS syntax. Almost all procedures and operations in SPSS can be done either via point-and-click or syntax.

CRC Press Online - Book: Introduction to Scientific Programming and Simulation Using R Features Examines R as the medium for scientific computation Demonstrates simple mathematical tools in the context of stochastic modeling Introduces simple yet useful mathematical tools in the context of stochastic modeling Provides a clear exposition of scientific programming within R Contains simulation exercises to refine intuition about variability, randomness, and inference under certainty Uninstalling Antivirus Software, the Clean Way: 40 Removal Tools & Instructions Whether you just bought a new system with bloatware or you're just seeking greener pastures, you'll eventually have to uninstall security software. Unfortunately, that's not always as easy as it could be, especially with solutions on mass market retail machines. Shady business tactics aside, making security software tricky to remove increases the chances that clueless users don't mistakenly scrap their protection. It can also wreak havoc if the same inexperienced user installs new security software without removing their previous solution. Fortunately, most companies provide tools and guides on properly uninstalling their products and we thought it'd be handy to provide a consolidated resource with links to removal tools and/or removal instructions. *Note: Developer doesn't provide a separate uninstall tool, instead relies on Windows' traditional Add/Remove method or additional manual steps.

Algebraic Modeling Languages Emmanuel Fragniere. Optimization Modeling Languages Using AMPL (example)EXAMINING MODELS AND DATA IN AMPLAMPL tutorialAMPL A Mathematical Programming Language at the University of Michigan Documentation by D HolmesUsing AMPL under UNIXNew AMPL commandsAMPL display and reportingNew AMPL language featuresAMPL scriptsSuffixes in AMPLBuilt-in suffices in AMPLFix bugs in AMPLNew in AMPL CHANGING THE MODEL AND DATACHARACTER STRINGS in AMPLFORMAT STRINGS FOR printf AND sprintfREGULAR EXPRESSIONS in AMPLNew in AMPLOPTIONS_INOUT file for AMPLAMPL documentationExample Problems Solved By AMPL (by Feng-Tien Yu)A short tutorial on AMPL (Postscript file)Brief introduction into AMPLModeliser avec AMPL (French)AMPL Implementation of Kruskal's AlgorithmH. Mittelmann's AMPL collection

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