A big problem in our community

December 14, 2017
By
A big problem in our community

Hi all, Kristian Lum, who was already one of my Statistics superheroes for her many interesting papers and great talks, bravely wrote the following text about her experience as a young statistician going to conferences: https://medium.com/@kristianlum/statistics-we-have-a-problem-304638dc5de5 I can’t thank Kristian enough for speaking out. Her experience is both shocking and hardly surprising. Many, many academics […]

Read more »

Lessons for a budding Social Enterprise from Elevate

December 14, 2017
By
Lessons for a budding Social Enterprise from Elevate

Statistics Learning Centre is a social enterprise set up by Dr Nic Petty and Dr Shane Dye after leaving the University of Canterbury. Our aim is to help the world to feel better about mathematics and statistics, by inventing, creating … Continue reading →

Read more »

Getting started with seplyr

December 14, 2017
By
Getting started with seplyr

A big “thank you!!!” to Microsoft for hosting our new introduction to seplyr. If you are working R and big data I think the seplyr package can be a valuable tool. For how and why, please check out our new introductory article. Note: now that wrapr version 1.0.2 is up on CRAN all of the … Continue reading Getting started…

Read more »

We need to stop sacrificing women on the altar of deeply mediocre men (ISBA edition)

December 14, 2017
By
We need to stop sacrificing women on the altar of deeply mediocre men (ISBA edition)

(This is not Andrew. I would ask you not to speculate in the comments who S is, this is not a great venue for that.) Kristian Lum just published an essay about her experiences being sexually assaulted at statistics conferences.  You should read the whole thing because it’s important, but there’s a sample paragraph. I […] The post We need…

Read more »

The Night Riders

December 14, 2017
By

Gilbert Chin writes: After reading this piece [“How one 19-year-old Illinois man Is distorting national polling averages,” by Nate Cohn] and this Nature news story [“Seeing deadly mutations in an new light,” by Erika Hayden], I wonder if you might consider blogging about how this appears to be the same issue in two different disciplines. […] The post The Night…

Read more »

Is it possible to paint an overly bleak picture of university based clinical research?

December 13, 2017
By

Recently I was reminiscing with an old colleague about  how our publications from almost 30 years ago that tried to encourage better conduct and reporting of clinical research seemed to have had so little impact. This one for instance. Recently, they suggested there is some reason to hope for better, pointing to a website reporting […] The post Is it…

Read more »

Yes, you can do statistical inference from nonrandom samples. Which is a good thing, considering that nonrandom samples are pretty much all we’ve got.

December 13, 2017
By

Luiz Caseiro writes: 1. P-values and Confidence Intervals are used to draw inferences about a population from a sample. Is that right? 2. As far as I researched, standard statistical softwares usually compute confidence intervals (CI) and p-values assuming that we have a simple random sample. Is that right? 3. If we have another kind […] The post Yes, you…

Read more »

How to get the current TITLE in SAS

December 13, 2017
By
How to get the current TITLE in SAS

The SAS language is large. Even after 20+ years of using SAS, there are many features that I have never used. Recently it became necessary for me to learn about DICTIONARY tables in PROC SQL (and the associated SASHELP views) because I needed to programmatically obtain the text for the [...] The post How to get the current TITLE in…

Read more »

One Little Thing To Consider When Naming Things (Software)

Everyone knows that naming is hard (the other hard thing is cache invalidation). There is a little thing that I guess people often forget to consider when naming things: is the name easy to type? I have had difficulties with typing a few software package names, and the two most impressive ones are “TeX Live” and “ReporteRs”. For TeX Live,…

Read more »

Verging on trust

December 12, 2017
By
Verging on trust

Kaiser Fung, founder of Junk Charts and Principal Analytics Prep, the premier data analytics bootcamp in New York City, finds omitted data in a chart used by Verge to illustrate the survey of attitudes toward social media brands.

Read more »

Two steps forward, one step back

December 12, 2017
By

Alex Gamma writes in with what he describes as “an amusing little story” from two years ago: When Deaton & Case published their study, and after your re-analysis had uncovered the missing age-correction, I’ve pointed out this issue to several news blogs that reported on the study, but were not aware of the problem (only […] The post Two steps…

Read more »

save() vs saveRDS()

So Jenny finally decided to write a blog post about why she would set your computer on fire, which was great. Twitter is an inferior tool for discussions or Q&A. Sadly, most people would still stick to Twitter for everything. I saw Scott Gigante asked Jenny a great question on Twitter: Why do you prefer saveRDS() to save()? From the…

Read more »

Workflow, baby, workflow

December 11, 2017
By

Bob Carpenter writes: Here’s what we do and what we recommend everyone else do: 1. code the model as straightforwardly as possible 2. generate fake data 3. make sure the program properly codes the model 4. run the program on real data 5. *If* the model is too slow, optimize *one step at a time* […] The post Workflow, baby,…

Read more »

A self-similar Christmas tree

December 11, 2017
By
A self-similar Christmas tree

Happy holidays to all my readers! My greeting-card to you is an image of a self-similar Christmas tree. The image (click to enlarge) was created in SAS by using two features that I blog about regularly: matrix computations and ODS statistical graphics. Self-similarity in Kronecker products I have previously shown [...] The post A self-similar Christmas tree appeared first on…

Read more »

nrow, references and copies

December 10, 2017
By
nrow, references and copies

    Hi all, This post deals with a strange phenomenon in R that I have noticed while working on unbiased MCMC. Reducing the problem to a simple form, consider the following code, which iteratively samples a vector ‘x’ and stores it in a row of a large matrix called ‘chain’ (I’ve kept the MCMC […]

Read more »

More on the Problem with Bayesian Model Averaging

December 10, 2017
By

I blogged earlier on a problem with Bayesian model averaging (BMA) and gave some links to new work that chips away at it. The interesting thing about that new work is that it stays very close to traditional BMA while acknowledging that all models are m...

Read more »

A reporter sent me a Jama paper and asked me what I thought . . .

December 10, 2017
By

My reply: Thanks for sending. I can’t be sure about everything they’re doing but the paper looks reasonable to me. I expect there are various ways that the analysis could be improved, but on a quick look I don’t see anything obviously wrong with it, and the authors seem to know what they are doing. […] The post A reporter…

Read more »

StanCon2018: one month to go, schedule finalized, over 20 talks, 6 tutorials… and flights are cheap

December 10, 2017
By

StanCon2018 is shaping up nicely as a unique opportunity to immerse oneself in all things Stan, meet Stan developers and fellow users. Registration is still open, but spots are filling up fast. We’re at 130 registrants and counting! The draft schedule is now up. We have 16 accepted talks and 6 invited talks. Posters are […] The post StanCon2018: one…

Read more »

Interactive visualizations of sampling and GP regression

December 9, 2017
By

You really don’t want to miss Chi Feng‘s absolutely wonderful interactive demos. (1) Markov chain Monte Carlo sampling I believe this is exactly what Andrew was asking for a few Stan meetings ago: Chi Feng’s Interactive MCMC Sampling Visualizer This tool lets you explore a range of sampling algorithms including random-walk Metropolis, Hamiltonian Monte Carlo, […] The post Interactive visualizations…

Read more »

How can a statistician help a lawyer?

December 9, 2017
By
How can a statistician help a lawyer?

I’ll be presenting at a webinar on Wednesday, December 13 at 1:00 PM Eastern. The title of the presentation is “Seven questions a statistician and answer for an attorney.” I will discuss, among other things, when common sense applies and when correct analysis can be counter-intuitive. There will be ample time at the end of […]

Read more »

Ed Jaynes outta control!

December 9, 2017
By

A commmenter points to a chapter of E. T. Jaynes’s book on probability and inference that contains the following amazing bit: The information we get from the TV evening news is not that a certain event actually happened in a certain way it is that some news reporter has claimed that it did. Even seeing […] The post Ed Jaynes…

Read more »

Books to Read While the Algae Grow in Your Fur, June 2016

December 9, 2017
By

Attention conservation notice: I have no taste. Oliver Morton, The Planet Remade: How Geoengineering Could Change the World This is just as impressive, enlightening, gracefully-written and thoughtful as I'd expect from the author of Eaters of the S...

Read more »

The myth of interpretability of econometric models

December 9, 2017
By
The myth of interpretability of econometric models

There are important discussions nowadays about data modeling, to choose between the “two cultures” (as mentioned in Breiman (2001)), i.e. either econometrics models or machine/statistical learning models. We did discuss this issue recently in Econométrie et Machine Learning (so far only in French) with Emmanuel Flachaire and Antoine Ly. One argument often used by econometricians is the interpretability of econometric…

Read more »


Subscribe

Email:

  Subscribe