https://www.youtube.com/watch?v=XCETXuhErsY&list=PLsri7w6p16vu3mMWzijxOmhrlvN23W04_&index=2&t=0s ================================================================================ Relationship between independent variables by using criterion of data ================================================================================ measure analysis method intervention by other variables correlation analysis interval scale, ratio scale partial correlation analysis yes Pearson correlation analysis no ordinal scale Spearman ordinal correlation analysis - cross analysis nominal scale Cross tabulation analysis - ================================================================================