Adatbányászati technikák alkalmazása magyar vállalkozások adatait tartalmazó adatbázison Microsoft Excel 2007-ben
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چکیده
منابع مشابه
The accuracy of statistical distributions in Microsoft® Excel 2007
We provide an assessment of the statistical distributions in Microsoft r © Excel versions 97 through 2007 along with two competing spreadsheet programs, namely Gnumeric 1.7.11 and OpenOffice.org Calc 2.3.0. We find that the accuracy of various statistical functions in Excel 2007 range from unacceptably bad to acceptable but significantly inferior in comparison to alternative implementations. In...
متن کاملOn the accuracy of statistical procedures in Microsoft Excel 2007
Excel 2007, like its predecessors, fails a standard set of intermediate-level accuracy tests in three areas: statistical distributions, random number generation, and estimation. Additional errors in specific Excel procedures are discussed.Microsoft’s continuing inability to correctly fix errors is discussed. No statistical procedure in Excel should be used until Microsoft documents that the pro...
متن کاملIt's easy to produce chartjunk using Microsoft®Excel 2007 but hard to make good graphs
The purpose of default settings in a graphic tool is tomake it easy to produce good graphics that accord with the principles of statistical graphics, e.g., [Tufte, E.R., 1990. Envisioning Information. Graphics Press, Cheshire, Conn, Tufte, E.R., 1997. Visual Explanations: Images and Quantities, Evidence and Narrative, 2nd Edition. Graphics Press, Cheshire, Conn, Cleveland, W.S., 1993. Visualizi...
متن کاملPreparing data for analysis using microsoft Excel.
A critical component essential to good research is the accurate and efficient collection and preparation of data for analysis. Most medical researchers have little or no training in data management, often causing not only excessive time spent cleaning data but also a risk that the data set contains collection or recording errors. The implementation of simple guidelines based on techniques used ...
متن کامل857 Learning Probability Concepts Using Microsoft Excel
The difficulties encountered by students of all ages in understanding probability and randomness have been widely documented. This paper describes an attempt to teach probability concepts at secondary school level using widely available spreadsheet software. The 10PLUS (Ten Probability Lessons Using Spreadsheets) project seeks to improve students’ grasp of randomness and elementary probability ...
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ژورنال
عنوان ژورنال: Jelenkori Társadalmi és Gazdasági Folyamatok
سال: 2010
ISSN: 2676-9867,1788-7593
DOI: 10.14232/jtgf.2010.1-2.229-233