Study guide with lecture notes for Experimental and Correlational Research at the Leiden University

Study guide with lecture notes

Lecture notes with Experimental and Correlational Research

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Lecture notes with Experimental and Correlational Research at the Leiden University - 2018/2019

Lecture notes with Experimental and Correlational Research at the Leiden University - 2018/2019


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Lecture 1

6/2/2019

-Correlation is about two variables being associated, but there is no evidence of causality. 

-Causality however requires multiple factors: covariance (variables have an association), directionality(cause precedes effect (in time)) and internal validity(eliminate alternative explanations).

- Correlations can be displayed in scatterplots that show:

       - Direction: positive or negative

       - Strength: density of the points

       - Shape: linear/nonlinear and homogeneous (one cluster) /

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Workgroup notes with Experimental & Correlational Statistics at the Leiden University - 2018/2019

Workgroup notes with Experimental & Correlational Statistics at the Leiden University - 2018/2019


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Week 1

 

Prep exercises

  1. Which combination of measurement levels is required for the use of the Pearson, Spearman, and point-biserial correlation respectively?
  2. Which formula is suitable for calculating the Pearson, Spearman, and point-biserial correlations?
  3. Which formula describes the relationship between rpb and tindep?
  4. Which combination of measurement
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Psychologie: Leiden - Bachelor en Masters UL - Samenvattingen en studiehulp
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