Publications by John Mount
Examining Meta-Analysis
Joseph Rickert and I put together an experiment trying to both run a standard meta-analysis and then reproduce similar results directly using Bayesian methods. I think it came out really interesting and we share it here at R Works and also here on Github. A meta-analysis is an attempt to estimate an effect by combining several pre-existing studies....
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Calculating at Pencil and Paper Scale
Introduction It can be fun to drive a problem all the way into the ground. I don’t always get to do that on paying projects, however sometimes I can do it with hobby projects. In this case I am going to re-solve Dudeney’s Remainder Problem again and again to argue that it can be solved at a pencil and paper scale. The problem is as follows. A ...
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Dyson’s Algorithm for the Twelve Coins Problem
Nina continues with the 12 coins problem by transcribing Dyson’s algorithm into R. It is kind of a fun article. Most of us see the 12 coins problem as a one-off puzzle that we spend a little time with and give up on. In her earlier “The Twelve Coins Puzzle” Nina used an algebraic notation to allow her to search long enough to solve the 12 coi...
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Come Learn About Time Series with Me at ODSC West Wednesday October 30th, 2024
I’ll be teaching how to solve time series problems at ODSC West Wednesday October 30th, 2024. This is a neglected topic that can unlock a lot of value in your organization.Find at https://odsc.com/california/odsc-west-schedule-2024/ , Tutorials | Workshops, 30 Oct Day 2. 3:30 PM Pacific time, 1 hour long. Hope to see you there!!!(Hyatt Regency Sa...
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Dudeney’s Remainder Problem
The remainder problem The description of this puzzle really cracks me up (Dudeney, Strand Magazine, January 1924). Health risks aside, how do we find the maximal integer d such that (480608 % d) = (508811 % d) = (723217 % d)? The solution A good puzzle strategy is to try to simplify the problem. This particular puzzle is equivalent to solving: 50...
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An Easy Puzzle: The Perplexed Banker
Nina Zumel continues with the puzzles. This one is “The Perplexed Banker”. In my opinion, this one captures the essence of the “mathematical” aspect of a puzzle. For a mathematical puzzle one often hopes there is a systematic method that makes the puzzle easy. In this case there is indeed a systematic method that makes the puzzle easy. Then...
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Bachet’s Four Weights Problem
More mathematical puzzling from Nina Zumel: “Bachet’s Four Weights Problem” Related To leave a comment for the author, please follow the link and comment on their blog: R – Win Vector LLC. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or...
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The 100 Bushels Puzzle
Nina Zumel shares the following puzzle from the December 1908 issue of The Strand Magazine: 100 bushes of corn are distributed to 100 people such that every man receives 3 bushels, every woman 2 bushels, and every child 1/2 a bushel. How many men, women, and children are there? Check out some of the background and how to solve it here. Related ...
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Bay Area use R Meetup is Back!!!!
BARUG is back!!! Hope to see you there! https://www.meetup.com/r-users/events/303488652/?eventOrigin=group_upcoming_events Related To leave a comment for the author, please follow the link and comment on their blog: R – Win Vector LLC. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topic...
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Please Version Data
Introduction An important goal of our Win Vector LLC teaching offerings is to instill in engineers some familiarity with, and empathy for, how data is likely to be used for analytics and business. Having such engineers in your organization greatly increases the quality of the data later available to your analysts and data scientists. This in turn e...
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