Introductory Econometrics using Quandl and R
From the webpage:
Econometrics applies mathematical and statistical tools to reveal measurable relationships in real world data. Though the ability to find relationships in quantitative data is useful in many professions and academic disciplines, knowledge and experience with econometric processes is limited to those with a college or university background in the subject. However, this does not need to be the case. Modern statistical software has become more powerful, but also much easier to use. In this tutorial, we introduce one of the most useful econometric tools: linear regression. Using detailed examples and clear explanations, we will begin our tutorial with the basic concepts of regression analysis and end with the more complex multiple regression model.
Regression and multiple regression models are used in many domains. Picking up the technique and its terminology will help you recognize poor or deceitful use of it.
Data skepticism is a useful skill whether you are developing topic maps or not.