Research Methods

On this page you fill find information on research methods concepts.

A 12-minute video on levels of measurement and descriptive statistics.
A 4-minute video on hypothesis testing, alpha levels, and p-values.
A short 4-minute video summarizing the main differences between null and alternative hypotheses.
A longer, 15-minute video giving an in-depth explanation of null vs alternative hypotheses with three examples.

An 8-minute video overviewing significance testing and p-values.
A 5-minute video giving a succinct explanation of what significance means - including a conceptual explanation for effect size.
A great interactive visual showing what Cohen's d effect sizes really mean.
Information on different kinds of effect sizes and how they are calculated.
A quick 3-minute video explaining Type I and Type II error with an example - includes a brief explanation of power.

A website outlining the purpose and procedure of basic linear regression.
A great blog post introducing linear regression, reviewing the assumptions involved, and providing visuals of concepts like homoscedasticity.
A blog post giving an overview of multiple regression, the assumptions made, and performing multiple regression in SPSS.