Basic data operations in SPSS - ISS - University of Leeds

Basic data operations in SPSS for Windows 17
Version 6 (November 2009)
Contents
1 Introduction ................................................................................................................................... 4
1.1 About data management ........................................................................................................ 4
1.2 Requirements ........................................................................................................................ 4
1.3 Documentation ...................................................................................................................... 4
1.4 Getting Started ...................................................................................................................... 4
Task 1 Download example data sets ........................................................................................ 4
1.5 The SPSS Command Language ............................................................................................ 5
1.6 The Syntax Window ............................................................................................................... 5
Task 2 Using the Syntax Window ............................................................................................ 5
1.7 The Syntax Reference Guide ................................................................................................. 8
Task 3: Using the SPSS Syntax Reference Guide ..................................................................... 8
2 Data Transformations ................................................................................................................... 9
2.1 Creating New Variables ......................................................................................................... 9
Task 4 Using Compute to create a new variable ...................................................................... 9
2.2 Computing Counts Using COUNT........................................................................................ 12
Task 5 Computing a Count ..................................................................................................... 12
2.3 Recoding variables .............................................................................................................. 15
Task 6 Recoding into the same variable ................................................................................. 15
Task 7 Recoding into a new variable ..................................................................................... 17
Task 8 Performing an automatic recode ................................................................................. 21
2.4 Conditional transformations ................................................................................................. 23
Task 9 Performing a conditional compute ............................................................................. 23
3 Working with subsets of data ...................................................................................................... 26
Task 10 Selecting a subset of cases .......................................................................................... 26
Task 11 Deleting selected cases ............................................................................................... 28
Task 12 Sub-group processing ................................................................................................. 29
4 Merging SPSS data sets ............................................................................................................. 31
Task 13 Adding cases ............................................................................................................... 31
Task 14 Adding variables ......................................................................................................... 34
Task 15 Finishing SPSS ........................................................................................................... 36
Information Systems Services Page 2 of36
Version 4.1 (December 2006) tut113_vn17nov2009.doc}