What is a Kolmogorov-Smirnov normality test? SPSS Kolmogorov-Smirnov test from NPAR TESTS SPSS Kolmogorov-Smirnov test from EXAMINE VARIABLES Reporting a Kolmogorov-Smirnov Test Wrong Results in SPSS? What is a Kolmogorov-Smirnov normality test? The Kolmogorov-Smirnov test examines if scores are likely to follow some distribution in some population.For avoiding confusion, there’s 2 Kolmogorov-Smirnov tests: there’s the one […]
Summary SPSS commands come in three basic types: procedures, transformations and other commands. Understanding this distinction will allow you to get things done in SPSS faster and more efficiently. SPSS Command Types Diagram SPSS Transformations As shown in the figure, the first question is when a command is executed. Some SPSS commands are not carried out […]
In SPSS, SELECT IF deletes cases (rows of data) that don’t satisfy some condition(s). Like so, SELECT IF basically means “don’t delete if …” A minimal example isSELECT IF(GENDER = 1). SPSS SELECT IF – Some Examples Say we collected data on our employees and the resulting data file is employees.sav. Our client is only interested in female […]
MATCH FILES is an SPSS command mostly used for merging data holding similar cases but different variables. For different cases but similar variables, use ADD FILES. MATCH FILES is also the way to go for a table lookup similar to VLOOKUP in Excel. Merging two datasets by id, which is a unique case identifier. SPSS Match Files – Basic Use The […]
In SPSS, IF is a conditional COMPUTE command. It calculates a (possibly new) variable but only for those cases that satisfy some condition(s). This tutorial walks you through some typical examples of the IF command. Example 1 – Replace Missing Values With the syntax below we’ll first create some test data. Next we’ll set the existing variable score […]
