## Pascal’s triangle in SAS

December 3, 2014
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Pascal's triangle is the name given to the triangular array of binomial coefficients. The nth row is the set of coefficients in the expansion of the binomial expression (1 + x)n. Complicated stuff, right? Well, yes and no. Pascal's triangle is known to many school children who have never heard of polynomials […]

## Pascal’s triangle in SAS

December 3, 2014
By

Pascal's triangle is the name given to the triangular array of binomial coefficients. The nth row is the set of coefficients in the expansion of the binomial expression (1 + x)n. Complicated stuff, right? Well, yes and no. Pascal's triangle is known to many school children who have never heard of polynomials […]

## Random probability tweets

December 3, 2014
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-+*For the next few weeks, I’ve scheduled @ProbFact tweets to come out at random times. They will follow a Poisson distribution with an average of two per day. (Times are truncated to multiples of 5 minutes because my scheduling software requires that.)

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## Study of a Plot: The Manhattan Plot

December 3, 2014
By

I was thinking on a nice way of plotting campaign expenditures in a paper I’m working on. I thought this would be something like the following, simple, but meaningful even in the context of lots of outliers in both tails. Although I like the sen...

## the Grumble distribution and an ODE

December 2, 2014
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$the Grumble distribution and an ODE$

As ‘Og’s readers may have noticed, I paid some recent visits to Cross Validated (although I find this too addictive to be sustainable on a long term basis!, and as already reported a few years ago frustrating at several levels from questions asked without any preliminary personal effort, to a lack of background material to […]

## Subjective Ways of Cutting a Continuous Variables

December 2, 2014
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You have probably seen @coulmont‘s maps. If you haven’t, you should probably go and spend some time on his blog (but please, come back afterwards, I still have a story to tell you). Consider for instance the maps we obtained for a post published in Monkey Cage, a few months ago, The codes were discussed on a blog post (I spent some time on the econometric model, not really on…

## My Rutgers Seminar: tomorrow, December 3, on philosophy of statistics

December 2, 2014
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I’ll be talking about philosophy of statistics tomorrow afternoon at Rutgers University, in the Statistics and Biostatistics Department, if you happen to be in the vicinity and are interested. RUTGERS UNIVERSITY DEPARTMENT OF STATISTICS AND BIOSTATISTICS www.stat.rutgers.edu Seminar Speaker:     Professor Deborah Mayo, Virginia Tech Title:           Probing with Severity: Beyond […]

## RStudio in the cloud for dummies, 2014/2015 edition

December 2, 2014
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In 2012, we presented a post showing how to run RStudio in the cloud on an Amazon server. There were 7 steps, including one with 7 sub-steps, one of which had 6 sub-sub-steps. It was still pretty easy, for what it was-- an effectively free computer i...

## Thinking Like a Statistician: Social Media and the ‘Spiral of Silence’

December 2, 2014
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A few months ago the Pew Research Internet Project published a paper on social media and the ‘spiral of silence’. Their main finding is that people are less likely to discuss a controversial topic on social media than in person. Unlike others, I  did not find this result surprising, perhaps because I think like a statistician.

## How to read (in quantitative social science). And by implication, how to write.

December 2, 2014
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It all started when I was reading Chris Blattman’s blog and noticed this: One of the most provocative and interesting field experiments I [Blattman] have seen in this year: Poor people often do not make investments, even when returns are high. One possible explanation is that they have low aspirations and form mental models of […] The post How to read (in quantitative social science). And by implication, how to…

## June & July workshops in Bayesian data analysis

December 2, 2014
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Full list of workshops is here. Upcoming workshops include these:2015 June 1 - 5. Five-day course: Doing Bayesian Data Analysis, at Stats Camp, Dallas, Texas.2015 June 15-19. Five-day course: Doing Bayesian Data Analysis. University of St. Gallen, Swit...

## Measuring temperature with my Arduino

December 2, 2014
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It is really getting colder in London - it is now about 5°C outside. The heating is on and I have got better at measuring the temperature at home as well. Or, so I believe.Last week's approach of me guessing/feeling the temperature combined with an...

## Students don’t know what’s best for their own learning

December 2, 2014
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[This post is by Aki] This is my first blog posting. Arthur Poropat at Griffith University has a great posting Students don’t know what’s best for their own learning about two recent studies which came to the same conclusion: university students evaluate their teachers more positively when they learn less. My favorite part is That is why many […] The post Students don’t know what’s best for their own learning appeared first on…

## Creating new data with max values for each subject

December 2, 2014
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We have a data set dat with multiple observations per subject. We want to create a subset of this data such that each subject (with ID giving the unique identifier for the subject) contributes the observation where the variable X takes it’s maximum value for that subject. R solutions Hadleyverse solutions Using the excellent R […]

## Creating new data with max values for each subject

December 1, 2014
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Creating new data with max values for each subject We have a data set dat with multiple observations per subject. We want to create a subset of this data such that each subject (with ID giving the unique identifier for the subject) contributes the observation where the variable X takes it’s maximum value for that […]

## Statistical Controls Are Great – Except When They’re Not!

December 1, 2014
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A blog post today, titled, How Race Discrimination in Law Enforcement Actually Works", caught my eye. Seemed like an important topic. The post, by Ezra Klein, appeared on Vox.I'm not going to discuss it in any detail, but I think that some readers of t...

## R and Data Mining – Examples and Case Studies now in Chinese

December 1, 2014
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My book titled R and Data Mining – Examples and Case Studies now has its Chinese version, translated by researchers at South China University of Technology, and published by China Machine Press in September 2014. It is sold in China … Continue reading →

December 1, 2014
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As we count the year down, there's always time for more reading!Birg, L. and A. Goeddeke, 2014. Christmas economics - A sleigh ride. Discussion Paper No. 220, CEGE, University of Gottingen.Geraci, A., D. Fabbri, and C. Monfardini, 2014. Testing exogene...