Friday, November 15, 2013

Wednesday, November 13, 2013

Value of pictures

"The greatest value of a picture is when it forces us to notice what we never expected to see." 
- John W. Tukey

Beyond piquing our interest, mathematical images can also serve as tools for solving problems or even as explanations for already conjectured ideas.

http://blogs.ams.org/blogonmathblogs/2013/11/06/see-math-see-math-run/

Tuesday, November 12, 2013

Basics of Histograms

Histograms are used very often to show the distributions of variables. Although the basic command for histograms in R is simple, getting histogram to look exactly like you want takes getting to know a few options of the plot. Here are some ways to customize your histogram for your needs:

http://www.r-bloggers.com/basics-of-histograms/

Maximum Likelihood versus Goodness of Fit

If we have an i.i.d. sample, which can be modeled using two different families of distributions, how do we choose the best one:

http://www.r-bloggers.com/maximum-likelihood-versus-goodness-of-fit/

Sunday, November 10, 2013

How much a Statistician earns?

If you are planning to go to USA, which job would be most rewarding:

http://magazine.amstat.org/blog/2013/11/01/salarysurveyspaig/

Evergrowing CRAN

The number of CRAN packages has been increasing rapidly recently. There were about 4200 pacakges available when R 2.15.2 was released on October 26, 2012. As of today, there are 749 additional packages in the Bioconductor repository, and hundreds more R packages on GitHub. In any case, there are easily more than 6000 open-source R packages available. Here is a report:

http://www.r-bloggers.com/cran-now-has-5000-r-packages/