Rarely is role playing viewed as the effective and useful coaching tool that it is. When set up and used correctly, role playing is one of the most helpful ways to train and develop your employees.
Correlation analysis is used primarily as a data exploration technique to reveal the degree of association in a set of matched data. This information can inform subsequent analyses of relationships between variables. In particular, correlation can indicate possible factors that confound a relationship of interest.
Regression analysis is used to measure the degree of relationship between two or more RATIO variables. Consider any two RATIO variables, for example AGE and WAGES. One might reasonably expect that WAGES might increase as AGE increases, based on the hypothesis that one's experience increases with age.