StatTalk.Org

3d scatter plot using R

Enayetur Raheem — Fri, 02 Oct 2009 16:50:56 +0000

3dscatterplot.jpegThe other day I saw a three dimensional scatterplot in Montgomery's Regression book. I wanted to redraw the graph using the provided data. A simple google search revealed that there is a package called scatterplot3d. The scatterplot3d() can be used to draw a 3-dimensional scatter plot. Here is what the steps are:

Download and install the package from your nearest CRAN.
Load the package using the command library(scatterplot3d)

2009 CMS Winter Meeting , December 5-7, University of Windsor

Enayetur Raheem — Wed, 30 Sep 2009 19:20:45 +0000

The Canadian Mathematical Society (CMS) and the University of Windsor invite the mathematical community to the 2009 CMS Winter Meeting. The program will include ten plenary and prize lectures, and a wide variety of sessions.

All scientific talks and social events will take place at the Hilton Hotel and the Radisson Hotel; the registration desk will be located in the Riverfront Club Room of the Hilton Hotel.

Vitamin D plays a vital role in reducing the risk of death associated with older age

Statistician — Wed, 30 Sep 2009 17:33:08 +0000

A new study by researchers at the University of Colorado Denver and Massachusetts General Hospital (MGH) shows vitamin D plays a vital role in reducing the risk of death associated with older age. The research, just published in the Journal of the American Geriatrics Society, evaluated the association between vitamin D levels in the blood and the death rates of those 65 and older. The study found that older adults with insufficient levels of vitamin D die from heart disease at greater rates that those with adequate levels of the vitamin.

For Today’s Graduate, Just One Word: Statistics

Enayetur Raheem — Sat, 08 Aug 2009 02:20:29 +0000

Here is an encouraging post in New York Times newspaper about the prospect of statistics as a subject matter that will dominate the world in the coming years. Please spend some time to read it. It is a must -read for those studying statistics, particularly Applied Statistics in Bangladesh. The main report is written by Steve Lohr for the NY Times, published on August 5, 2009. Please read below.

Teaching in North America

Enayetur Raheem — Mon, 15 Jun 2009 03:50:35 +0000

Graduate students in North America (Canada and the US) are an integral part of a university. Sometimes they are treated as staff as they are on payroll of the university. They share office space and part of the other facilities that a regular faculty or staff gets. Students who enroll in Masters or PhD program are known as graduate students. Almost all the universities offer graduate program in many disciplines. However, there are some universities that offer only undergraduate degrees, and no graduate degree is offered.

Integration formulas

Enayetur Raheem — Mon, 08 Jun 2009 20:24:07 +0000

Basic integration formulas or Table of integrals.

General Forms

Trigonometric Forms

Differentiation formulas

Enayetur Raheem — Sat, 06 Jun 2009 22:19:05 +0000

General formulas

Exponential and Logarithmic functions

When statistics fails!

Enayetur Raheem — Fri, 05 Jun 2009 02:24:51 +0000

Air France Flight 447, flying from Rio de Janeiro to Paris, went off the radar on the morning of June 1, 2009. The Airbus 330-200 sent an automated message stating the plane had an electrical short circuit as they crossed through a thunderstorm and experienced turbulence over the Atlantic Ocean. The last contact the plane made was at about 8:30 p.m. EST, on the evening of Sunday, May 31, 2009

"Coming to SAS from SPSS" Receives Rave Reviews

Enayetur Raheem — Thu, 28 May 2009 09:41:44 +0000

SAS Press editor-in-chief Julie Platt shared her thoughts on the importance of this valuable resource. "We frequently receive feedback from customers, particularly in the academic market, that they want to move from SPSS to SAS. Having a guide that covers basic tasks and terminology in SPSS and maps them to the equivalent tasks and terminology in SAS will make that transition as easy as possible. It will be easily accessible.

Luncheon with Dr. Sen

Enayetur Raheem — Sat, 16 May 2009 15:21:08 +0000

Luncheon with PK SenWe met once again after more than 10 years! Last time it was at Institute of Statistical Research and Training (ISRT), University of Dhaka, when I was a graduate student and he was visiting Bangladesh. I knew that he hails from Bangladesh but I did not remember it until I heard him speaking in Bangla with a fellow student at University of Windsor.