By Sarah E. Boslaugh
An Intermediate advisor to SPSS Programming: utilizing Syntax for facts administration introduces the key projects of knowledge administration and provides ideas utilizing SPSS syntax. This e-book fills a huge hole within the schooling of many scholars and researchers, whose coursework has left them unprepared for the knowledge administration concerns that confront them once they start to do self sufficient learn. It additionally serves as an advent to SPSS programming. the entire easy good points of SPSS syntax are illustrated, as are many intermediate and complex subject matters resembling utilizing vectors and loops, studying advanced information documents, and utilizing the SPSS macro language.
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Additional info for An Intermediate Guide to SPSS Programming: Using Syntax for Data Management
10 Single Record Created From File With Multiple Records RACE 1 GENDER HSGRAD 2 1 USING FORTRAN-LIKE VARIABLE SPECIFICATIONS The FORTRAN language uses an efficient method of specifying variable formats that is often used in other languages, including SPSS. Even if you do not use this method, you need to know how to interpret it in programs written by others. A FORTRAN-like format specification includes three elements: the type of variable, its width, and (for numeric variables) the number of decimal places.
Step 1 is the most important: writing down what you want the program to do, in a series of logical steps. An example is given below: Check the new data file for errors. This includes the following steps: a. See how many cases are in the file. b. See how much missing data there is. c. See whether the data values are within acceptable ranges. d. See whether the expected skip patterns exist. qxd 10/12/2004 12:15 PM Page 21 An Introduction to Computer Programming A simple outline like this can be expanded to include more detail.
2. Look at the results of each section of code to be sure they are what you expect: The LIST, FREQUENCIES, and CROSSTABS commands are particularly useful in this regard. This may be facilitated by running code on a subset of the active file, for instance, by using the SAMPLE command (discussed in Chapter 18). 3. Test each section of code in sequence. 4. If you are really stuck, invent a small data set with values designed to test a troublesome section of code. COMMON SPSS SYNTAX ERRORS A relatively small number of mistakes account for the majority of syntax errors.
An Intermediate Guide to SPSS Programming: Using Syntax for Data Management by Sarah E. Boslaugh