Data Makes Reasonable Decision-making Possible

Posted to Miscellaneous  |  Nathan Yau

What is data?This guest post is by Andrew Gelman from Statistical Modeling, Causal Inference, and Social Science. He answers the question – “What is data and why should we care about it?”

Good data are better than bad data, but worst of all are data whose quality you can’t assess. Beyond this, we want to use statistical methods that allow us to combine data from many sources. I’m comfortable with regression and multilevel models, but other methods are out there too. In any case, we have to care about our data because inferences and decisions are just about always data-based, implicitly if not explicitly. Being the person in the room with the hard data gives you authority, as well it should.

Favorites

Pizza Place Geography

Most of the major pizza chains are within a 5-mile radius of where I live, so I have my pick, …

Real Chart Rules to Follow

There are rules—usually for specific chart types meant to be read in a specific way—that you shouldn’t break. When they are, everyone loses. This is that small handful.

Watching the growth of Walmart – now with 100% more Sam’s Club

The ever so popular Walmart growth map gets an update, and yes, it still looks like a wildfire. Sam’s Club follows soon after, although not nearly as vigorously.

Top Brewery Road Trip, Routed Algorithmically

There are a lot of great craft breweries in the United States, but there is only so much time. This is the computed best way to get to the top rated breweries and how to maximize the beer tasting experience. Every journey begins with a single sip.