Practical Data Science

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My vet told me I should stop feeding my dog grain-free dog food. Apparently, grain-free dog food is linked with a heart condition called Dilated…
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Last month I gave a talk at csv,conf on "Getting Credit for Invisible Work". The (amazing) csv,conf organizers just published a recording of the talk…
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My peers at Mozilla are running workshops on opportunity sizing. If you're unfamiliar, opportunity sizing is when you take some broad guesses at how…
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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…
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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…
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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…
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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…
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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…
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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…
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Economists have a handy phrase to describe a fairly common fallacy: "Post hoc ergo propter hoc" meaning "After, therefore because". Wikipedia has an…
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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 monthly…
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I was talking about tooling with Mark Reid a few weeks ago. I've been trying to find a way to simplify sharing analyses throughout the company. This is…
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