You can run these tests using SPSS Statistics, the procedure for which can be found in our Testing for Normality guide. However, the t-test is described as a robust test with respect to the assumption of normality. This means that some deviation away from normality does not have a large ...
Surveys are a valuable way to get feedback from customers, employees or research respondents. Learn more about surveys and use our FREE tool here.
Learn how to perform a Chi-Square Test easily with this step-by-step guide. Perfect for beginners looking to grasp the basics of statistical analysis.
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This guide will tell you when you should use Spearman's rank-order correlation to analyse your data, what assumptions you have to satisfy, how to calculate it, and how to report it. If you want to know how to run a Spearman correlation in SPSS Statistics, go to our Spearman's ...
Find out how you can use statistical analysis to organize your data and make better decisions for your business.
Learn how ANOVA can help you understand your research data, and how to simply set up your very first ANOVA test.
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Reported p-values of models refer to the increase in deviance when the respective variable was removed ("lm": F-statistics; "glm": Pearson's chi-square). Analyses were performed using SPSS 12.0, and LRTs were calculated using R 2.6.1 statistical package....
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