Market Research by Erik Mooi Marko Sarstedt & Irma Mooi-Reci

Author:Erik Mooi, Marko Sarstedt & Irma Mooi-Reci
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

by status, sort: swilk overall_sat

Check for Equality of Variances Assumption

Perform Levene’s test. Go to ► Statistics ► Classical tests of hypotheses ►Robust equal-variance test. Specify the dependent variable overall_sat under Variable: aand the grouping variable status under Variable defining comparison groups: aand then click on OK. The p-values of W0, W50 and W10 should be above 0.05 to validate the equality of the variances assumption.

robvar overall_sat, by (status)

Select the type of the test

Now that the assumption of normality and equality of the variance are met, proceed with the one-way ANOVA analysis.

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