PUTTING 35 INCHES OF RAIN IN PERSPECTIVE We are always interested in putting numbers into perspective, so we were interested in this article in which they put the Hurricane Harvey’s rain into perspective. They’re predicting 30-40 inches of rain in a few days in Texas. They asked an expert to put that into perspective and […]
K-MEANS CLUSTERING, A WORKHORSE OF DATA SCIENCE AND MACHINE LEARNING CLICK TO ENLARGE The USA is a large country. How different are people’s experiences of the weather depending on where they live? To look into this question, we downloaded high temperature data for over 1,300 airport weather stations in the contiguous USA for every day […]
JDM IS TOO LEGIT TO CEASE IN ITS LEGITIMACY We came across this article that looks at the relationship between sharing data and other variables of interest. We were especially interested in its Figure 1 which shows the percentage articles having open data. The journals listed are: JDM – Judgment and Decision Making PLOS – […]
DENSITY THE AVERAGE PERSON EXPERIENCES CLICK TO ENLARGE In Alaska, there’s about one person for each square mile of land. You might picture a typical Alaskan not being able to see the next house. But it’s not that way of course. Most of Alaska is uninhabited. People have crowded into a few areas. The average […]
TWO SHOT RUSSIAN ROULETTE WITH 2 BULLETS OR AN EQUAL CHANCE OF 1 or 3 BULLETS With p as the probability of dying on one shot, this figure shows how to get the probability of living through the game. Peter Ayton is giving a talk today at the London Judgement and Decision Making Seminar Imagine […]
THINGS THAT ARE NOT CONTAINED IN OUR MENTAL MODELS The inaccurately named blog Stuff Nobody Cares About did a post on something we do care about. They got an old data table that shows that the distances between streets, the distances between avenues, and the width of street and avenues in New York City varies […]
Here’s another rule of three, this one in statistics.
Who knew that Darwin and Pearson had little faith in fancy math?
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FIND YOUR BIRTHDAY IN PI, IN THREE DIFFERENT FORMATS It was Pi Day (March 14, like 3/14, like 3.14, get it?) recently and Time Magazine did a fun interactive app in which you can find your birthday inside the digits of pi. However: 1) They only used one format of birthday, in which July 4th […]
