2022 Introduction to Statistics in Research Mitchell 2nd ed

I N T R O T O R E S E A R C H : D A T A V I S U A L I Z A T I O N & C O M M O N S T A T T E S T S

Inferential Statistics for Association When to use? Dependent (outcome variable) Independent (Explanatory variable)

Parametric Test (data is normally distributed)

Non-Parametric test

Relationship between 2 continuous variables

Scale

Scale

Pearson’s Correlation Coefficient

Spearman’s Correlation Coefficient

Effect size :

We can interpret the correlation coefficient as representing the effect size

We can interpret the correlation coefficient as representing the effect size Chi-squared test goodness of fit Cohen’s W (SPSS Tutorials) Bonferroni Adjustment Link to reference Chi-squared test for independence

Assess the relationship between two categorical variables

Categorical

Categorical

Effect size :

Run Post hoc?

Two nominal variables have two or more categories

Nominal

Nominal

Ф 2 , c 2 , or v 2

Effect size

Run Post hoc?

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The next section is useful for a guide. Details on how to run the test are provided in the following chapter.

Statistical Test Flowchart

What statistical test should you use? This online flowchart has you answer questions and leads you through the process of determining what test fits your situation. Bookmark this!

Available at https://statsflowchart.co.uk/

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