Blog Archives

Counting is hard, especially when you don’t have theories

January 19, 2017
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Counting is hard, especially when you don’t have theories

Exploring the data about movies, uncovering data issues

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Good models + Bad data = Bad analysis

January 18, 2017
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Good models + Bad data = Bad analysis

Example showing how to diagnose bad data in data science models

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This headline writer has the secret to everlasting life

January 17, 2017
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This headline writer has the secret to everlasting life

I'm busy preparing a long post that will show up later. In the meantime, I saw this on GrubStreet: Read the sub-header. Wouldn't it be nice to have only 87 percent chance of dying?

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Race to the top, Erasmus edition

January 11, 2017
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Race to the top, Erasmus edition

(This is a submission from reader Lawrence Mayes. Thank you Lawrence!) I came across this unusual graphical representation of the destinations of scholarship students: [Kaiser here: The charts are hidden inside an annoying Flash app and it seems that the...

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Happy New Year (Big Data, Plainly Spoken)

January 9, 2017
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Happy New Year (Big Data, Plainly Spoken)

I am on vacation for another week, and posting will gradually resume. If you discovered the blog last year, I hope you will find much to enjoy in the coming year. If you are a long-time reader, thank you for giving me a bit of your time, once in a wh...

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Happy new year (Junk Charts)

January 9, 2017
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Happy new year (Junk Charts)

I am on vacation for another week, and posting will gradually resume. If you discovered the blog last year, I hope you will find much to enjoy in the coming year. If you are a long-time reader, thank you for...

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Chopped legs, and abridged analyses

December 27, 2016
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Chopped legs, and abridged analyses

Reader Glenn T. was not impressed by the graphical talent on display in the following column chart (and others) in a Monkey Cage post in the Washington Post: Not starting column charts at zero is like having one's legs chopped...

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ASA President meets OCCAM data

December 27, 2016
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Just leaving this quote from ASA President Jessica Utts here (Source: Amstat News Dec 2016): A few days ago, I was in Vietnam and took a four-hour bus ride from Ha Long Bay to Hanoi. When I arrived, my fitness tracker had given me credit for taking 9,124 steps and climbing 81 flights of stairs during those four hours, even though I only left my seat once during a short…

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What do these items have in common?

December 19, 2016
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What do these items have in common?

What do the following items have in common? A. Motion-detection light switch in your office that shuts off while you're typing at your computer B. Automatic flush that turns on while you're seated C. Voice-recognition system that picks up ambient noise and asks you to repeat something you didn't say D. Auto-correct software that flips a correct spelling to the wrong one you didn't anti-auto-correct the last time E. Fuzzy-logic…

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Is this chart rotten?

December 19, 2016
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Is this chart rotten?

Some students pointed me to a FiveThirtyEight article about Rotten Tomatoes scores that contain the following chart: (link to original) This is a chart that makes my head spin. Too much is going on, and all the variables in the...

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