article thumbnail

Understanding Simpson’s Paradox to Avoid Faulty Conclusions

Sisense

This is an example of Simpon’s paradox , a statistical phenomenon in which a trend that is present when data is put into groups reverses or disappears when the data is combined. It’s time to introduce a new statistical term. In 2009, researchers suggested that Simpson’s paradox may occur more often than commonly thought.

Testing 104
article thumbnail

The Lean Analytics Cycle: Metrics > Hypothesis > Experiment > Act

Occam's Razor

Remember that the raw number is not the only important part, we would also measure statistical significance. By late 2009, that experiment was a success, too; they'd climbed back up to 4.5 The result? The properties with professional photography had 2-3 times the number of bookings! The graph is impressive, right?

Metrics 156
article thumbnail

Themes and Conferences per Pacoid, Episode 9

Domino Data Lab

They also require advanced skills in statistics, experimental design, causal inference, and so on – more than most data science teams will have. Use of influence functions goes back to the 1970s in robust statistics. evaluate the effects of models on human subjects. measure the subjects’ ability to trust the models’ results.