Running VARSTOCASES is often necessary for generating nice charts in SPSS. One of the many examples is a stacked bar chart for comparing multiple variables. Sadly, we lose our variable labels when running VARSTOCASES and we really do need those. The solution is a simple tool that generates our VARSTOCASES for us and applies the variable labels of the input variables as value […]
DO REPEAT is a command for running other commands repetitively.SPSS DO REPEAT is often used for looping over (possibly new) variables. VECTOR with LOOP is an alternative way for doing so. Introduction Suppose we have a variable containing values 1 through 4 and we’d like to dichotomize it for a regression analysis. (For some more background, see Creating Dummy Variables in SPSS.) […]
SPSS VARSTOCASES is short for “variables to cases”. It restructures data by stacking variables on top of each other as illustrated by the figure above. You can try this simple example for yourself by downloading and opening sav_data018 and running the syntax below on it. SPSS VARSTOCASES Example 1 *Very basic VARSTOCASES example. varstocases /make v from […]
A car brand had 18 respondents rate 3 different car ads on attractiveness. The resulting data -part of which are shown above- are in adratings.sav. Some background variables were measured as well, including the respondent’s gender. The question we’ll try to answer is:are the 3 ads rated equally attractive and does gender play any role here?Since […]
What is Repeated Measures ANOVA? Repeated Measures ANOVA Assumptions Quick Data Check Running Repeated Measures ANOVA in SPSS Interpreting the Output Reporting Repeated Measures ANOVA 1. What is Repeated Measures ANOVA? SPSS repeated measures ANOVA tests if the means of 3 or more metric variables are all equal in some population. If this is true and we inspect a sample from our […]
Null Hypothesis Assumptions Example Repeated Measures ANOVA – Basic Formulas Post Hoc Tests Null Hypothesis The null hypothesis for a repeated measures ANOVA is that3(+) metric variables have identical means in some population. The variables are measured on the same subjects so we’re looking for within-subjects effects(differences among means). This basic idea is also referred to as dependent, […]
