By Sarah E. Boslaugh
An Intermediate consultant to SPSS Programming: utilizing Syntax for info administration introduces the key projects of knowledge administration and provides recommendations utilizing SPSS syntax. This publication fills an incredible hole within the schooling of many scholars and researchers, whose coursework has left them unprepared for the information administration concerns that confront them after they start to do self sufficient learn. It additionally serves as an creation to SPSS programming. the entire simple beneficial properties of SPSS syntax are illustrated, as are many intermediate and complex issues resembling utilizing vectors and loops, interpreting advanced information documents, and utilizing the SPSS macro language.
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Extra info for An Intermediate Guide to SPSS Programming: Using Syntax for Data Management
It is possible to refer to a file by its pathname within SPSS syntax. sav’. However, it is more convenient to associate an alias or name with the file location and use it to refer to the file. sav’. GET FILE = ts1. sav, and the GET FILE command uses the alias to open that file. , it is not permanently attached to any file location). The rules for SPSS variable names (discussed in Chapter 19) apply to aliases, including the following: 1. They can be no longer than eight characters. 2. They must begin with a letter or one of the symbols $, #, or @.
Unbalanced or unclosed parentheses mean that half of the pair is missing, as in the code below: COMPUTE var5 = ((var1 + var2) / (var3 + var4). [WRONG] 4. Unbalanced quotes. Like parentheses, apostrophes and quotation marks (both referred to informally as “quotes”) should generally be used in pairs. If the closing quote is omitted, SPSS does not know when to end the quote string. [WRONG] 5. Failing to declare a string variable before using it. String variables cannot be created in commands such as COMPUTE.
The document thus created becomes part of the dictionary of the file, and new documentation can be appended at any time. qxd 10/12/2004 12:17 PM Page 35 Documenting Syntax, Data, and Document Files DOCUMENT This file contains the data collected in the baseline phase of the School Safety Project. Data collection took place from Sept. 1, 2001, to May 1, 2002. Data cleaning was completed on August 30, 2002. Periods do not operate as command terminators within the DOCUMENT command. Each document is saved with its date of creation, and all documents associated with a data file may be seen, along with their dates of creation, with the command, DISPLAY DOCUMENTS.
An Intermediate Guide to SPSS Programming: Using Syntax for Data Management by Sarah E. Boslaugh