Applied Statistics Using SPSS, STATISTICA and MATLAB by Joaquim P. Marques de Sá

By Joaquim P. Marques de Sá

Intended for an individual wanting to use statistical research to a wide number of technological know-how and engineering difficulties, this ebook indicates find out how to use SPSS, MATLAB, STATISTICA and R for information description, statistical inference, category and regression, issue research, survival information and directional facts. The second version contains the R language, a brand new part on bootstrap estimation equipment and a more robust remedy of tree classifiers, plus extra examples and exercises.

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6). Besides the insertion of new variables, one can also perform other operations such as sorting the entire spreadsheet based on column values, or transposing columns and cases, using the STA TISTICA Data menu options. The addition of a new variable in SPSS is made by using the Insert Variable option, ofthe Data menu. In the case of the previous categorisation variable, one would then proceed to compute its values by using the Compute option of the Transform menu. 7 will then be displayed, where one would fill in the formula, similar to the previous one, but expressed in terms of the variable identifier, Pmax.

3. ST ATISTICA spreadsheet corresponding to the meteorological data. After building the data spreadsheet, it is advisable to save it using the Save As of the File menu. In this case we specify the filename Meteo, creating thus a Me teo. sta STATISTICA file that can be easily opened at another session with the Open option of File . Once the data filename is specified, it will appear in the title heading of the data spreadsheet and in this case, instead of "Data: Spreadsheet2*", "Data: Meteo. sta" will appear.

In MATLAB a semicolon inhibits the production of screen output. Also MATLAB commands can either be used in a procedure-like manner, producing output (as "answers", denoted ans), or in a function-like manner producing a value assigned to a variable (considered to be a matrix). 5000 At the end of each following chapter several exercises are proposed, involving computer experiments with the datasets. The datasets used in the examples and exercises, described in Appendix E, are supplied in the CD. Dataset names correspond to the respective EXCEL file names.

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