Potpourri: Statistics #50

431. Generating data to explore the myriad causal effects that can be estimated in observational data analysis
432. A Practical Guide to Mixed Models in R
433. Ask the Question, Visualize the Answer
434. Statistical Rethinking with brms, ggplot2, and the tidyverse
435. Twitter, political ideology & the 115th US Senate
436. You Can’t Test Instrument Validity
437. Introduction to Econometrics with R
438. Hands-On Programming with R
439. Tidytext Tutorials
440. What’s the best way to learn the programming language R? (Preferably, for free)