The problem with videos for teaching maths and stats

February 14, 2018
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The problem with videos for teaching maths and stats

The message of many popular mathematics and statistics videos is harming people’s perceptions of the nature of these disciplines. I acknowledge the potential for conflict of interest in this post –  critically examining the role of video in learning and … Continue reading →

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Easily Make Multi-tabbed .xlsx Files with openxlsx

February 14, 2018
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This is a quick script showing how to make multi-tabbed .xlsx files. I recently had the need to do this and used the flexible openxlsx package maintained by : Alexander Walker. The package is described by the author like this: … Continue reading →

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Use multilevel modeling to correct for the “winner’s curse” arising from selection of successful experimental results

February 14, 2018
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John Snow writes: I came across this blog by Milan Shen recently and thought you might find it interesting. A couple of things jumped out at me. It seemed like the so-called ‘Winner’s Curse’ is just another way of describing the statistical significance filter. It also doesn’t look like their correction method is very effective. […] The post Use multilevel modeling to correct for the “winner’s curse” arising from selection…

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The difference between CLASS statements and BY statements in SAS

February 14, 2018
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The difference between CLASS statements and BY statements in SAS

When I first learned to program in SAS, I remember being confused about the difference between CLASS statements and BY statements. A novice SAS programmer recently asked when to use one instead of the other, so this article explains the difference between the CLASS statement and BY variables in SAS [...] The post The difference between CLASS statements and BY statements in SAS appeared first on The DO Loop.

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jamovi for R: Easy but Controversial

February 14, 2018
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jamovi for R: Easy but Controversial

jamovi is software that aims to simplify two aspects of using R. It offers a point-and-click graphical user interface (GUI). It also provides functions that combines the capabilities of many others, bringing a more SPSS- or SAS-like method of programming … Continue reading →

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Looking for a New Maintainer of the tikzDevice Package

Looking for a New Maintainer of the tikzDevice Package

Today the tikzDevice package was orphaned on CRAN, mainly because neither Kirill Müller nor I have time to maintain it (both of us have been burned-out). I still love the fact that it makes it possible to write native LaTeX expressions in R plots and generate high-quality PDF. I still think it has the most appealing PDF vignette among all R packages I have seen. If anyone has time, understands…

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Looking for a New Maintainer of the tikzDevice Package

Looking for a New Maintainer of the tikzDevice Package

Today the tikzDevice package was orphaned on CRAN, mainly because neither Kirill Müller nor I have time to maintain it (both of us have been burned-out). I still love the fact that it makes it possible write native LaTeX expressions in R plots and generate high-quality PDF. I still think it has the most appealing PDF vignette among all R packages I have seen. If anyone has time, understands C,…

Read more »

Looking for a New Maintainer of the tikzDevice Package

Looking for a New Maintainer of the tikzDevice Package

Today the tikzDevice package was orphaned on CRAN, mainly because neither Kirill Müller nor I have time to maintain it (both of us have been burned-out). I still love the fact that it makes it possible write native LaTeX expressions in R plots and generate high-quality PDF. I still think it has the most appealing PDF vignette among all R packages I have seen. If anyone has time, understands C,…

Read more »

Looking for a New Maintainer of the tikzDevice Package

Looking for a New Maintainer of the tikzDevice Package

Today the tikzDevice package was orphaned on CRAN, mainly because neither Kirill Müller nor I have time to maintain it (both of us have been burned-out). I still love the fact that it makes it possible write native LaTeX expressions in R plots and generate high-quality PDF. I still think it has the most appealing PDF vignette among all R packages I have seen. If anyone has time, understands C,…

Read more »

Looking for a New Maintainer of the tikzDevice Package

Looking for a New Maintainer of the tikzDevice Package

Today the tikzDevice package was orphaned on CRAN, mainly because neither Kirill Müller nor I have time to maintain it (both of us have been burned-out). I still love the fact that it makes it possible write native LaTeX expressions in R plots and generate high-quality PDF. I still think it has the most appealing PDF vignette among all R packages I have seen. If anyone has time, understands C,…

Read more »

weakly informative reparameterisations

February 13, 2018
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weakly informative reparameterisations

Our paper, weakly informative reparameterisations of location-scale mixtures, with Kaniav Kamary and Kate Lee, got accepted by JCGS! Great news, which comes in perfect timing for Kaniav as she is currently applying for positions. The paper proposes a unidimensional mixture Bayesian modelling based on the first and second moment constraints, since these turn the remainder […]

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The Lab Where It Happens

February 13, 2018
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“Study 1 was planned in 2007, but it was conducted in the Spring of 2008 shortly after the first author was asked to take a 15-month leave-of-absence to be the Executive Director for USDA’s Center for Nutrition Policy and Promotion in Washington DC. . . . The manuscript describing this pair of studies did not […] The post The Lab Where It Happens appeared first on Statistical Modeling, Causal Inference,…

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Neural Nets, ML and AI

February 13, 2018
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"The Technological Elements of Artificial Intelligence", by Matt Taddy, is packed with insight on the development of neural nets and ML as related to the broader development of AI. I have lots to say, but it will have to wait until next week. For ...

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One data pattern, many interpretations

February 13, 2018
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David Pittelli points us to this paper: “When Is Higher Neuroticism Protective Against Death? Findings From UK Biobank,” and writes: They come to a rather absurd conclusion, in my opinion, which is that neuroticism is protective if, and only if, you say you are in bad health, overlooking the probability that neuroticism instead makes you […] The post One data pattern, many interpretations appeared first on Statistical Modeling, Causal Inference,…

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Bursting of the social-media bubble

February 13, 2018
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Bursting of the social-media bubble

Kaiser Fung, founder of Principal Analytics Prep, discusses the expose of the fake follower factory that underlies much of the social-media economy.

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Testing Seth Roberts’ appetite theory

February 13, 2018
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Jonathan Tupper writes: My organization is running a group test of Seth Roberts’ old theory about appetite. We are running something like a “web trial” as discussed in your Chance article with Seth. And in fact our design was very inspired by your conversation… For one, we are using a control group which takes light […] The post Testing Seth Roberts’ appetite theory appeared first on Statistical Modeling, Causal Inference,…

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Is 10,000 Cells Big?

February 13, 2018
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Is 10,000 Cells Big?

Trick question: is a 10,000 cell numeric data.frame big or small? In the era of "big data" 10,000 cells is minuscule. Such data could be fit on fewer than 1,000 punched cards (or less than half a box). The joking answer is: it is small when they are selling you the system, but can be … Continue reading Is 10,000 Cells Big?

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3 quick tricks to get into the data science/analytics field

February 12, 2018
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John McCool writes: Do you have advice getting into the data science/analytics field? I just graduated with a B.S. in environmental science and a statistics minor and am currently interning at a university. I enjoy working with datasets from sports to transportation and doing historical analysis and predictive modeling. My quick advice is to avoid […] The post 3 quick tricks to get into the data science/analytics field appeared first…

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Looking above the waist, dataviz style

February 12, 2018
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Looking above the waist, dataviz style

Kaiser Fung, founder of Junk Charts blog and Principal Analytics Prep, suggests that the NYU admissions team reports its impressive record of application growth on a line chart instead of a bar chart with the bottoms cut off.

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ML, Forecasting, and Market Design

February 12, 2018
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Nice stuff from Milgrom and Tadelis. Improved forecasting via improved machine learning in turn helps improve our ability to design effective markets -- better anticipating consumer/producer demand/supply movements, more finely segmenting and targeting...

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Merged legends: Overlay a symbol and line in a legend item

February 12, 2018
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Merged legends: Overlay a symbol and line in a legend item

Did you know that SAS can combine or "merge" a symbol and a line pattern into a single legend item, as shown below? This kind of legend is useful when you are overlaying a group of curves onto a scatter plot. It enables the reader to quickly associate values of [...] The post Merged legends: Overlay a symbol and line in a legend item appeared first on The DO Loop.

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Hysteresis corner: “These mistakes and omissions do not change the general conclusion of the paper . . .”

February 12, 2018
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All right, then. The paper’s called Attractive Data Sustain Increased B.S. Intake in Journals Attractive Names Sustain Increased Vegetable Intake in Schools. Seriously, though, this is just an extreme example of a general phenomenon, which we might call scientific hysteresis or the research incumbency advantage: When you’re submitting a paper to a journal, it can […] The post Hysteresis corner: “These mistakes and omissions do not change the general conclusion…

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Recommended Reading for February

February 11, 2018
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Recommended Reading for February

Here are some reading suggestions:Bruns, S. B., Z. Csereklyei, & D. I. Stern, 2018. A multicointegration model of global climate change. Discussion Paper No. 336, Center for European, Governance and Economic Development Research, University of Goet...

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