It's been a while, so it's time for a rant (in this case gentle, with no names named).Discussion of financial technology ("fintech", as it's called) seems to be everywhere these days, from business school fintech course offerings to high-end academic f...
I recently blogged on a new proposal heavily backed by elite statisticians to "redefine statistical significance", forthcoming in the elite journal Nature Human Behavior. (A link to the proposal appears at the end of this post.) I have a bi...
I recently blogged on a new proposal heavily backed by elite statisticians to "redefine statistical significance", forthcoming in the elite journal Nature Human Behavior. (A link to the proposal appears at the end of this post.) I have a bi...
This is presently among the hottest topics / discussions / developments in statistics. Seriously. Just look at the abstract and dozens of distinguished authors of the paper below, which is forthcoming in one of the world's leading science o...
dplyr is one of the most popular R packages. It is powerful and important. But is it in fact easily comprehensible? dplyr makes sense to those of us who use it a lot. And we can teach part time R users a lot of the common good use patterns. But, is it an easy task … Continue reading Is dplyr Easily Comprehensible?
Here is an absolutely horrible way to confuse yourself and get an inflated reported R-squared on a simple linear regression model in R. We have written about this before, but we found a new twist on the problem (interactions with categorical variable encoding) which we would like to call out here. First let’s set up … Continue reading An easy way to accidentally inflate reported R-squared in linear regression models
There are a number of statistical principles that are perhaps more honored in the breach than in the observance. For fun I am going to name a few, and show why they are not always the “precision surgical knives of thought” one would hope for (working more like large hammers). The litany of complaints A … Continue reading You can’t do that in statistics
Check out the new Angrist-Pischke (AP), "Undergraduate Econometrics Instruction: Through Our Classes, Darkly". I guess I have no choice but to weigh in. The issues are important, and my earlier AP post, "Mostly Harmless Econometrics?", is my all-time m...
R has a number of assignment operators (at least “<-“, “=“, and “->“; plus “<<-” and “->>” which have different semantics). The R-style guides routinely insist on “<-” as being the only preferred form. In this note we are going to try to make the case for “->” when using magrittr pipelines. [edit: After reading … Continue reading The Case For Using -> In R
Check out this new prize, http://statprize.org/ (Thanks, Dave Giles, for informing me via your tweet.) It should be USD 1 Million, ahead of the Nobel, as statistics is a key part (arguably the key part) of the foundation on which every science builds....
