Why are we still teaching T-tests?

September 30, 2014
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The following post by Norm Matloff originally appeared on his blog, Mad(Data)Scientist, on September 15th. We rarely republish posts that have appeared on other blogs, however, the questions that Norm raises both with respect to the teaching of statistics, and his assertion that "R's statistical procedures are centered far too much on significance testing" deserve a second look. Moreover,...

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Example 2014.11: Contrasts the basic way for R

September 30, 2014
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Example 2014.11: Contrasts the basic way for R

As we discuss in section 6.1.4 of the second edition, R and SAS handle categorical variables and their parameterization in models quite differently. SAS treats them on a...

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Structural Arb Analysis and Portfolio Management Functionality in R

September 30, 2014
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Structural Arb Analysis and Portfolio Management Functionality in R

I want to use this post to replicate an article I found on SeekingAlpha, along with demonstrating PerformanceAnalytics’s ability to … Continue reading →

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Syrian Refugee Settlement Clinic Locations

September 30, 2014
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Syrian Refugee Settlement Clinic Locations

Previously I posted about the location of refugee settlements and how that had grown in density over time as well as in numbers.  As many NGOs and non-profits work...

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Running RStudio via Docker in the Cloud

September 30, 2014
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Running RStudio via Docker in the Cloud

Deploying applications via Docker container is the current talk of town. I have heard about Docker and played around with it a little, but when Dirk Eddelbuettel posted his...

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seeking altruistic social scientists, demographers, survey researchers

September 30, 2014
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seeking altruistic social scientists, demographers, survey researchers

hi everyone, please share this:  if you are an experienced user of a publicly-available survey data set from any country or international organization, let's work together on some user-friendly...

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Rcpp 0.11.3

September 29, 2014
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A new release 0.11.3 of Rcpp is now on the CRAN network for GNU R, and an updated Debian package has been uploaded too. Rcpp has become the most...

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Data management with ShinyApps.io

September 29, 2014
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Data management with ShinyApps.io

Some of the most innovative Shiny apps share data across user sessions. Some apps share the results of one session to use in future sessions, others track user characteristics...

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Video introduction to data manipulation with dplyr

September 29, 2014
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Hadley Wickham's dplyr package is a great toolkit for getting data ready for analysis in R. If you haven't yet taken the plunge to using dplyr, Kevin Markham has...

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TURF Analysis: A Bad Answer to the Wrong Question

September 29, 2014
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TURF Analysis: A Bad Answer to the Wrong Question

Now that R has a package performing Total Unduplicated Reach and Frequency (TURF) Analysis, it might be a good time to issue a warning to all R users. DON'T...

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Registration now open for Master R Developer workshop in San Francisco

September 29, 2014
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Registration now open for Master R Developer workshop in San Francisco

Registration is now open for the next Master R Development workshop led by Hadley Wickham, author of over 30 R packages and the Advanced R book. The workshop will...

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A majority victory is not that impossible

September 29, 2014
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A majority victory is not that impossible

By this time next week, we'll already know the true vote intentions of Brazilians towards the candidates running for president. Not long time ago a runoff was taken as...

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Ramarro: “R for Developers” free (web) book

September 29, 2014
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What is Ramarro? Ramarro is a book about advanced R pro

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R package for Computational Actuarial Science

September 29, 2014
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A webpage for the book is now hosted on http://cas.uqam.ca/ So far, it is a very basic page, but information regarding the package can be found there. For instance, to install...

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Machine learning with R & Advanced R programming course

Machine learning with R & Advanced R programming course

This year, BNOSAC offers 2 R courses in cooperation with the Leuven Statistics Research Center. The courses are part of the Leuven STATistics STATe of the Art Training Initiative...

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jsonlite 0.9.12: now even lighter and faster

September 28, 2014
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jsonlite 0.9.12: now even lighter and faster

The jsonlite package implements a robust, high performance JSON parser and generator for R, optimized for statistical data and the web....

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future of computational statistics

September 28, 2014
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future of computational statistics

I am currently preparing a survey paper on the present state of computational statistics, reflecting on the massive evolution of the field since my early Monte Carlo simulations on...

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Row Search in Parallel

September 28, 2014
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Row Search in Parallel

I’ve been always wondering whether the efficiency of row search can be improved if the whole data.frame is splitted into chunks and then the row search is conducted within...

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Back to square one – R and RStudio installation

September 28, 2014
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Back to square one  – R and RStudio installation

I remember my first experience installing R. Basic installation can be humbling for someone not familiar with mirror networks or file binaries. I remember not knowing the difference between...

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Deep Down Below – Using in-database analytics from within Tableau (with MADlib)

September 28, 2014
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Deep Down Below – Using in-database analytics from within Tableau (with MADlib)

Introduction Using Tableau for visualizing all kinds of data is quite a joy, but it’s not that strong on build-in analytics or predictive features. Tableaus integration of R was...

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Updated dplyr Examples

September 28, 2014
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Updated dplyr Examples

Over the summer I made two posts about using the dplyr package.  The first was an example of the dplyr verbs applied to fish data.  The second was an example...

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Stage abundances, eigenvector of population matrix

September 28, 2014
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Stage abundances, eigenvector of population matrix

The previous article introduced the seasonal matrices and the population growth rate λ of imaginary annual plant.  This article focuses on  the meaning of the eigenvector at first, and...

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Bayesian models in R

September 28, 2014
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Bayesian models in R

There are many ways to run general Bayesian calculations in or from R. The best known are JAGS, OpenBUGS and STAN. Then some time ago Rasmus Bååth had a...

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Exploring Mangalyaan tweets with R

September 27, 2014
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Exploring Mangalyaan tweets with R

Mangalyaan is the spacecraft of Indian Space Research Orgnization’s Mars Orbiter Mission that entered the orbit of Mars last week. There were several tweets in Twitter with hashtag #Mangalyaan...

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Recognizing Patterns in the Purchase Process by Following the Pathways Marked By Others

September 27, 2014
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Recognizing Patterns in the Purchase Process by Following the Pathways Marked By Others

Herbert Simon's "ant on the beach" does not search for food in a straight line because the environment is not uniform with pebbles, pools and rough terrain. At least...

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A book about some important bits of R

September 27, 2014
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I see that Hadley Wickham’s new book, “Advanced R”, is being published in dead tree form and will be available a month or so. Hadley has generously made the...

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Canned Regular Expressions: qdapRegex 0.1.2 on CRAN

September 27, 2014
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Canned Regular Expressions: qdapRegex 0.1.2 on CRAN

We’re pleased to announce first CRAN release of qdapRegex! You can read about qdapRegex or skip right to the examples. qdapRegex is a collection of regular expression tools associated with...

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Error propagation based on interval arithmetics

September 27, 2014
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Error propagation based on interval arithmetics

I added an interval function to my ‘propagate’ package (now on CRAN) that conducts error propagation based on interval arithmetics. It calculates the uncertainty of a model by using...

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Gender Analysis of Facebook Post Likes

September 27, 2014
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Gender Analysis of Facebook Post Likes

A lot of people showed a huge interest in analyzing Facebook data with R. So I decided to write some more tutorials about the possibilities you have with Rfacebook...

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