While Model Trains

Read data blog posts.
Carefully handpicked.
Presented 3 at a time.

Why do we minimize the mean squared error?

Alex Molas

A refresher on the theory behind Mean Squared Error.

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What to consider when using text in data visualizations

Lisa Charlotte Muth

An in-depth explanation on how to use text to enhance the visual appeal and readability of visualizations.

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Why Correlation Usually ≠ Causation

Gwern

"Despite this admonition, people are overconfident in claiming correlations to support favored causal interpretations and are surprised by the results of randomized experiments, suggesting that they are biased & systematically underestimate the prevalence of confounds / common-causation."

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