Practical Data Science
I spent some time earlier this year orchestrating a massive experiment for Firefox. We launched a bunch of new features with Firefox 80 and we wanted to understand whether these new features improved our metrics. In the process, I ended up talking with a bunch of Firefox enginee…
Ryan Harter
NewTopWhat is Practical Data Science?About
Welcome to Practical Data Science by me, Ryan Harter. Principal Data Scientist @ Mozilla Sign up now so you don’t miss the first issue. In the meantime…
Ryan Harter
Jan 6
Leading with Data - Cascading Metrics It's surprisingly hard to lead a company with data. There's a lot written about how to set good goals and how to …
Ryan Harter
Dec 9, 2020
Last week, one of my peers asked me to explain what I meant by "Data Intuition", and I realized I really didn't have a good definition. That's a proble…
Ryan Harter
Oct 20, 2020
A year or so ago, I read this article about how Wells Fargo ended up in such a mess. If you don't remember, Wells Fargo was opening accounts in their c…
Ryan Harter
Oct 7, 2020
Every other week, I go through my todo list and decide where I should focus my attention. I review a list of prompts that help me choose important work…
Ryan Harter
Jul 10, 2020
Economists have a handy phrase to describe a fairly common fallacy: "Post hoc ergo propter hoc" meaning "After, therefore because". Wikipedia has an ex…
Ryan Harter
Jun 17, 2020
I'm ramping up on a project to understand how Firefox retains users. Right now I'm trying to build some context quickly. For example, what's our monthl…
Ryan Harter
Dec 13, 2019
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Practical Data Science


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