18:11

Chi-Square Test of Independence in R

28:13

Cleaning Data in R

28:23

Hierarchical Linear Regression in R

12:52

Grand-mean centering, cluster-mean centering, and cluster means

25:21

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11:12

Why You Should Center Variables in Statistics

8:27

13.10 Multiple Linear Regression: Mean-Center & Standardization

41:01

Mediation Analysis in R