On a lot of DataFrame objects, the index will typically be an ascending list of numbers. If I have something with dates, I ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Identifying causal relationships from observational data is not easy. Still, ...

Still using Excel for your data analysis? Learn how to leverage Python so you can work with larger datasets and automate repetitive tasks. Learning to code, whether with Python, JavaScript, or another ...

Here’s how the general-purpose favorite of scientists stacks up against the stat head’s data-honed tool of choice The boss’s boss looks out across the server farm and sees data—petabytes and petabytes ...