Blog Archives

Details, details, details: giving Zillow a pie treatment

August 22, 2017
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Details, details, details: giving Zillow a pie treatment

Kaiser Fung, founder of Junk Charts and Principal Analytics Prep, takes a detailed look at a Zillow chart, showing underwater homes and delinquent mortgages. Surprisingly, pie charts work well here.

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Gelman digested read

August 16, 2017
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It's hard to keep up with Andrew Gelman, so let me point to some interesting recent posts from his blog. Readings on philosophy of statistics (link): Andrew has a bunch of links of (mostly his own) writings about deep statistical issues. Science is about understanding how the world works, which involves questions of cause and effect, and randomness and unexplained variability. Data that can be observed are almost never sufficient…

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Did web scraping just receive a legal boost?

August 15, 2017
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Kaiser Fung, founder of Principal Analytics Prep and author of Numbersense, discusses a recent legal ruling against LinkedIn's technologies that restricts web scraping.

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Speed demon quartered and shrunk

August 14, 2017
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Speed demon quartered and shrunk

Kaiser Fung, founder of Junk Charts and Principal Analytics Prep, explains how Microsoft distorted and exaggerated the relative speed of its Edge browser relative to competition

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Starstruck and doubled over: losing poise over Indian charts

August 9, 2017
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Starstruck and doubled over: losing poise over Indian charts

Kaiser Fung, founder of Junkcharts and Principal Analytics Prep, explains why two simple charts from the press in India confused and annoyed readers, offering alternative versions that make a greater impact.

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A call for less automation, more transparency in digital advertising

August 8, 2017
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Kaiser Fung, founder of Principal Analytics Prep and founding director of Applied Analytics at Columbia, calls for reform in the digital advertising industry to address concerns about measurability and accountability

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Visualizing electoral college politics: exercise in displaying relationships between variables

August 3, 2017
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Visualizing electoral college politics: exercise in displaying relationships between variables

Kaiser Fung, founder of Junk Charts and Principal Analytics Prep, a next-gen data analytics bootcamp, shows how to portray complex multivariate relationships using electoral college politics as an example.

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Know your data 21: another example of data sleaze, straight from your home

August 1, 2017
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Kaiser Fung, founder of Principal Analytics Prep and author of Numbersense, reacts to the news that Roomba captures detailed maps of people's homes.

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If you are using Facebook Ads split testing (A/B testing), stop fooling yourself

July 26, 2017
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Kaiser Fung, founder of Principal Analytics Prep, and former director of Applied Analytics at Columbia University, explains why you can't run proper A/B tests on Facebook

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Another simple Excel chart needs help

July 24, 2017
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Another simple Excel chart needs help

Kaiser Fung, founder of Principal Analytics Prep and Junk Charts, takes apart an Elon Musk chart, created using some Excel defaults.

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