Ethan ColeThe Spreadsheet That Beat Our Churn Model
We spent six weeks on a gradient-boosted churn predictor. A three-column spreadsheet from the support lead did better.
Data Science
All 202Technology 8Programming 16Artificial Intelligence 12Data Science 7Design 8Startups 15Business 7Marketing 7Money 9Productivity 5Self Improvement 10Health 12Relationships 6Culture 7Politics 10Science 6Travel 6Food 13Books 9Sports 11Poetry 6Life 12
Ethan ColeEthan ColeStop Sending Your CEO the Average. Send the Shape Instead
Why a single mean hides the story in most business data, and three simple alternatives that lead to better decisions.
Elena MarchettiThe 0.3 Percent of Rows That Ruined My Quarterly Report
A handful of duplicated shipments doubled a regional growth number, and I almost presented it to the board.
Ethan Cole7 Questions I Ask Before Training Any Model
Most failed ML projects fail before the first line of training code. These questions catch the problems early.
Ethan ColeThe Dashboard Nobody Opened: What 40 Unused Charts Taught Me
I audited the view logs of a dashboard I was proud of. The results were humbling, and they changed how I build reports.
Elena MarchettiWhy I Plot Everything Before I Trust a Single Summary Statistic
Two suppliers had the same average delivery delay. One was reliable and one was a coin toss.
Ethan ColeSeven Questions I Ask Before Touching Any New Dataset
A checklist born from projects that went wrong, so that the next analysis starts from understanding instead of assumptions.
