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

Who is Older and Younger than You

Here’s a chart to show you how long you have until you start to feel your age.

Best Data Visualization Projects of 2016

Here are my favorites for the year.

A Day in the Life of Americans

I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.

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.