How to...

Other types of practical questions...

General

Data Screening

Missing Values

Outliers

► Normality

- Meta-analysis - Mediation - What is an Interaction? - Interaction between two continuous variables - Interaction between categorical and continuous variables - What is a correlation? - What is a partial correlation? - What is a point-biserial correlation? - What is regression? - What is analysis of covariance (ANCOVA)?

- What is a scatterplot? - What is linearity? - Want help using SPSS? - What is "syntax" in SPSS? - What is Computational Modeling? - What is a rank-based nonparametric test?

- Why transform continuous variables into categorical variables? - How to dichotomize variables? - Why cut into thirds or fourths instead of dichotomizing?

- How do I create a composite of items? - Why create a composite of items? - How do I know when it is appropriate to create a composite? - How do I create a composite with items with different scale ranges? - How do I create a composite with items labeled in opposite directions?