Making simple map with R

Some instructional guide on making simple map with R can be found at



Data Science Programs

In the hype of Big Data Analytics and Data Science, how many college programs have been created in the past few years to meet the end market demand workforce? Is your school catching up with the trend of education?

To get some idea of the list of programs, one can visit the following webpages:

Tap Water vs Bottled Water

Most people would think that bottled water is better than tap water and I do think this way too. My husband bought two big packages of bottled water every week just because we thought bottled water is much better than tap water. But this morning I heard from radio that bottled water is nothing but unfiltered tap water with less testings and 1000 more expensive. Is it true?

I went online and found that the finding is not new. Here is what I found: Believe or not, it is well researched that filtered tap water is better than bottled water. Why do we spend more on bottled water anymore?  Please read:


Stat 101

In this big data age, everyone is required to have some data sense. Statistics as a science of data, becomes more and more important nowadays. Harvard’s Statistics 101 is a good starting point.

Data Science: Who’s baby?

If you tell people that you are a statistician, people may immediately think about data, because it is common to think that statisticians are data miners. In fact, this is just one side of a die. Statisticians not only run data analysis, more importantly develop statistical methodologies, supervise experimental design, and do simulation study. Furthermore, they help policy makers to make decision and provide suggestions. Thus, data crunching is just part of the work statisticians do.
Data science initially was termed by two well known statisticians. They are  Chien-Fu Jeff Wu ( and William S. Celeveland ( Here is a pretty nice presentation by Dr. Diego Kuonen, who cited the above two statisticians:

Salary by Careers and Income by States

If you are interested in how much one can make for certain career, here is a fair site to get some idea:

If you are interested in how much income will make you middle class in USA, please visit: This site reorts that a recent study conducted by Pew Charitable Trusts shows that the 2015 middle class household income in USA has decreased from since 2000. The results based on the median income data from the US Census Burea’s 2013.

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