3093 search results for "Ggplot"

Frequentist German Tank Problem

March 20, 2014
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Frequentist German Tank Problem

The German Tank Problem: The Frequentist Way Many things are given a serial number and often that serial number, logically, starts at 1 and for each new unit is increased by 1. For example, German tanks in World War II had several parts with serial numbers. By collecting...

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Stop using bivariate correlations for variable selection

March 19, 2014
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Stop using bivariate correlations for variable selection

Stop using bivariate correlations for variable selection Something I've never understood is the widespread calculation and reporting of univariate and bivariate statistics in applied work, especially when it comes to model selection. Bivariate statistics are, at best, useless for multi-variate model selection and, at worst, harmful. Since nearly all...

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Stop using bivariate correlations for variable selection

March 19, 2014
By
Stop using bivariate correlations for variable selection

Stop using bivariate correlations for variable selection Something I've never understood is the widespread calculation and reporting of univariate and bivariate statistics in applied work, especially when it comes to model selection. Bivariate statistics are, at best, useless for multi-variate model selection and, at worst, harmful. Since nearly all...

Read more »

Guardian data blog — UK general election analysis in R

March 18, 2014
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Guardian data blog — UK general election analysis in R

The Guardian newspaper has for a few years been running a data blog and has built up a massive repository of (often) well-curated datasets on a huge number of topics. They even have an indexed list of all data sets they’ve put … Continue reading →

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MoneyPuck – Best subsets regression of NHL teams

March 17, 2014
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MoneyPuck – Best subsets regression of NHL teams

Spring is at hand and it is a time of renewal, March Madness and to settle scores in the NHL.  There are many scores to be settled: Flyers vs. Penguins, Blackhawks vs. Red Wings, Leafs vs. Habs and pretty much everyone else vs. the Bruins.  L...

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Species occurrence data

March 17, 2014
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Species occurrence data

The rOpenSci projects aims to provide programmatic access to scientific data repositories on the web. A vast majority of the packages in our current suite retrieve some form of biodiversity or taxonomic data. Since several of these datasets have been georeferenced, it provides numerous opportunities for visualizing species distributions, building species distribution maps, and for using it analyses such...

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Above Average: Analyzing Self-Rated Qualities in R

March 16, 2014
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Above Average: Analyzing Self-Rated Qualities in R

Numerous psychological studies have demonstrated that people often have an inflated perception of their personal qualities. From work performance to driving skills, people report being above average in relation to others when it comes to many arenas. This extends to how people perceive their own physical attractiveness and intelligence levels. This begs the important question: Are

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Analysis of the Time Aspect of the Matches at The International 3 (Dota 2 Tournament)

March 16, 2014
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Analysis of the Time Aspect of the Matches at The International 3 (Dota 2 Tournament)

It's been a while since I analysed something with R. I decided to pick into Dota 2 statistics. This game is the real eSport now with players fighting for respectable prise pools. And the main Dota 2 event is The International where best teams compete each other in astonishing battles. So I grabbed some...

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PK calculations for infusion at constant rate

March 16, 2014
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PK calculations for infusion at constant rate

In this third PK posting I move to chapter 10, study problem 4 of Rowland and Tozer (Clinical pharmacokinetics and pharmacodynamics, 4th edition). In this problem one subject gets a 24 hours continuous dose. In many respects the Jags calculation is not very different from before, but the relation between parameters in the model and PK parameters is a...

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Moving the North Pole to the Equator

March 15, 2014
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Moving the North Pole to the Equator

I am still working with @3wen on visualizations of the North Pole. So far, it was not that difficult to generate maps, but we started to have problems with the ice region in the Arctic. More precisely, it was complicated to compute the area of this region (even if we can easily get a shapefile). Consider the globe, worldmap <- ggplot()...

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