Blog Archives

Teaching Assistant with R expertise needed in Toronto

December 12, 2011
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Services of a teaching assistant (TA) are required for a course in Applied Retail Research at Ryerson University in Toronto. The course will run from January to April 2012. Experience with statistical analysis  using R is required. For details on the course, please click HERE. To apply or read more about the position, please

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Are students’ teaching evaluations influenced by instructors’ looks?

August 3, 2011
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Are students’ teaching evaluations influenced by instructors’ looks?

Are students' teaching evaluations influenced by instructors' looks? ggplot2 may help find the answer.The recent release of RcmdrPlugin.KMggplot2 has made ggplot2 available to those who prefer GUI to the command line interface. With the new plugin for ...

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Stata 12 embraces structural equation models

June 28, 2011
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Stata 12 embraces structural equation models

Stata 12 has just been announced. The software will start shipping by the end of July.  A key new feature introduced in the new version is the module for structural equation models (SEM), a staple tool in marketing, psychology, and several other research disciplines.LISREL and AMOS have...

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Going over the speed limit

April 17, 2011
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Going over the speed limit

In an earlier post   I had reported on how R compared with Stata for executing algorithms involving maximum likelihood estimation. This post  offers the following updates on the last post: Stata is in fact even faster than previously reported. The 64-bit version of the newly...

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Going over the speed limit

April 17, 2011
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Going over the speed limit

In an earlier post   I had reported on how R compared with Stata for executing algorithms involving maximum likelihood estimation. This post  offers the following updates on the last post: Stata is in fact even faster than previously reported. The 64-bit version of the newly...

Read more »

Speeding tickets for R and Stata

April 10, 2011
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Speeding tickets for R and Stata

How fast is R? Is it as fast in executing routines as the other off-the-shelf software, such as Stata? After some comparative experimentation, I found Stata to be 5 to 8  times faster than R. For me, speed has not been a concern in the past. I had used R with smaller datasets...

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Speeding tickets for R and Stata

April 10, 2011
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Speeding tickets for R and Stata

How fast is R? Is it as fast in executing routines as the other off-the-shelf software, such as Stata? After some comparative experimentation, I found Stata to be 5 to 8  times faster than R. For me, speed has not been a concern in the past. I had used R with smaller datasets...

Read more »

Painting a picture of statistical packages

April 4, 2011
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Painting a picture of statistical packages

Imagine you have to analyze text comprising 18,000 words. You have to identify the most commonly cited ideas or words in the text and then present the analysis in a graphic format. There are sophisticated tools out there to help you with this task, but then again there is a tight deadline. You have fewer than five minutes to...

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Painting a picture of statistical packages

April 4, 2011
By
Painting a picture of statistical packages

Imagine you have to analyze text comprising 18,000 words. You have to identify the most commonly cited ideas or words in the text and then present the analysis in a graphic format. There are sophisticated tools out there to help you with this task, but then again there is a tight deadline. You have fewer than five minutes to...

Read more »

R ready to Deduce you

April 1, 2011
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R ready to Deduce you

Despite being one of the most powerful computing platforms, and being free at the same time, R still struggles against other statistical software, such as SPSS and SAS, in gaining mass appeal amongst users of statistical and market intelligence software. Many have cited the absence of a user-friendly graphical user interface (GUI)...

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