Professor of Statistics
Welcome to my homepage!
Balgobin Nandram (Bal) is a native of Guyana (British Guiana), and
is of Indian origin. Bal earned a Master's degree in Applied
Statistics at Imperial College of Science, Technology and Medicine
in 1981. He then returned to Guyana, and after three years, he
came to the United States August 1984. He studied at first at the
State University of New York at Albany, and after one year, he
moved to the University of Iowa where he earned the Ph.D. in
statistics after an additional four years.
In August 1989 Bal joined the Mathematical Sciences' faculty at
the Worcester Polytechnic Institute in Massachusetts as Assistant
Professor of Statistics. In 1995 he obtained tenure from WPI and
was promoted to Associate Professor. At last, after a long
productive period at WPI, July 1, 2003 Bal was promoted to
Professor of Statistics.
Bal is married to Minwantie (Min) since 1978, and they are blessed
with one daughter, Nankumarie (Nan), who was born in London while
he was working towards the Master's degree in Statistics. After
residing for fifteen years in the U.S., Bal and Min were sworn in
as U.S. citizens April 29, 1999. Nan is also an American citizen
as well. Nan obtained the B.S. in Biomedical Engineering, May
2003, and the M.S. in Biomedical Engineering with specialization
in Bio-Mechanics, February 2005, both from WPI. Since December
2005, Nan has been working for Perceptive Informatics at Waltham
(now at Billerica), and she brags about her work in Medical
Images. She obtained her second promotion to Image Operations
Lead, October 10, 2011.
May 30 - June 4, 2007 Bal visited Guyana on a family emergency.
This is Bal's first visit to Guyana since he came to the United
States of America, twenty-three years ago. Bal found that the
streets and the houses are smaller, and life is faster. There are
televisions and telephones in every house he visited, and it is
easy to go from one place to the other via taxi.
From January 1, 1999 to June 30, 2000 Bal was the first NCHS/ASA
Research Fellow at the National Center for Health Statistics
(NCHS), Maryland. During this time, Bal lived in the DC area for
periods of two weeks. After each two weeks' period, he returned
home in Worcester to visit his family and students at WPI. Summer,
May-August 2001, Bal spent most of his time doing research at the
NCHS living in the same manner as he did when he was a Research
July 2002 - August 2003 Bal visited the NCHS again. With his
regular teaching load at WPI, he worked one week each month at the
NCHS that year. Currently, he holds an office at the NCHS, Office
of Research and Methodology, Room 3220, 3311 Toledo Road,
Hyattsville, Maryland (Voice: 301 458 4688; Fax: 301 458 4031;
Bal, Min and and Nan had a one-week (May 26 - June 2, 2003) family
vacation in London. They visited many places including Imperial
College of Science, Technology and Medicine, where Bal did the MS
in Statistics, St. Georges Hospital, where Nan was born, and Lords
Cricket Ground (Bal was actively involved in cricket in Guyana!)
Our main means of transportation in London was the underground
train. The rides on the British Airlines Bowing 747 and the stay
in the Royal National Hotel were terrific.
During the academic year 2003/2004 Bal spent his sabbatical leave
at the National Center for Health Statistics, Hyattsville,
SOUTH KOREA-PHILIPPINES-THAILAND, June 3-24, 2012.
South Korea: June 3-10, 2012; Philippines: June
10-17, 2012, June 20-24, 2012; Thailand: June 17-20, 2012. This
is my third trip to South Korea, third trip to Philippines and
first trip to Thailand. The highlights of my trip were my one-day
vacation in Busan, South Korea, my one-day vacation at Tagaytay,
Philippines, and my accommodation at the Shangri-La hotel,
Bangkok (City of Angels).
In South Korea Mr. Sang-gyu Kwak (Bob) defended his dissertation
on "Bayesian Inference on Contingency Tables with Uncertainty
about Independence". Also two students started PhD dissertations.
I gave a technical talk at Kyungpook National University. I also
discussed the Joint PhD Program with the faculty.
In Busan I visited Taejongdae (train ride), Jagalchi-market
(grilled fish), Dongbaek Island (shore street) and Heaundae
Beach. In Daegu I also visited the Buddhist Temple at Donghwasa
on the slope of the Palgongsan Mountain. Each morning at 5:30
I jugged in the Kyungpook National University stadium.
In total I made six presentations,
including a six-hour workshop on Bayesian Small Area Estimation
and a non-technical lecture on Research at Worcester Polytechnic
Institute. In the Philippines two students also started their
PhD dissertations. Several students in the Philippines expressed
interest in WPI's PhD Program in Statistics. I also made a
one-day visit to the University of the Philippines at Los Banos
and a half-day visit to the University of the Philippines at
Diliman. The highlight of my trip in Los Banos was the lunch with
the faculty at the Kamayan Sa Palaisdan floating restaurant in
During this trip I made several connections for WPI with
regards to a Project Center in Manila and Joint PhD Programs in
the Philippines. At DLSU I discussed WPI's Project Centers and the
Joint PhD Programs with Dr. Alvin Culaba, Executive Vice President
Relations and Internationalization Office and Professor of Mechanical
My vacation, with Shirlee and Reggie and their families, in
Tagaytay was a memorable one. We ate lunch, a grand one, in Leslie's
Restaurant, Tagaytay. We visited Tagaytay picnic grove (park with the
rides) and Taal Vista Hotel (believed to be the best
view of the iconic Taal volcano). On our way we stopped at many
fruit markets on the side of the road.
I enjoyed the wet market ("dampa") on the Manila Bay.
Here you buy the life fish or shrimp, you take it to a nearby
restaurant and tell them how to cook it. I also enjoyed
jugging on the Manila Bay and drinking a young cocoanut (``buko'') at the
end of my jug.
In Bangkok I gave a talk at the International Symposium on
Business and Industrial Statistics. I also organized an invited
section at the symposium. More attractive to me were swimming in
the ``pond floating in heaven'', the luxurious breakfast at the
Shangri-La Hotel in Bangkok and the hosputality of the hotel's
The cost of my trip was mostly covered by Kyungpook National
University, South Korea, and De La Salle University,
Philippines. Worcester Polytechnic Insttute, School of
Statistics, University of the Philippines at Diliman,
Institute of Statistics, University of the Philippines at Los
Banos also pitched in, and there was a some support from
INVITED PRESENTATIONS 2014
a. ''A Bayesian Test of Independence for Sparse Contingency Tables of BMD and BMI'',
University of Massachusetts Medical School, Department of Quantitative Health
Sciences, March 18 2014.
b. ''A Bayesian Test of Independence for Sparse Contingency Tables'',
University of Maryland, College Park, In Honor of Professor Malay Ghosh,
May 30 2014.
c. I ran a workshop on ''Bayesian Statistics and Survey Sampling'' in
the Department of Statistics, Kyungpook National University, Daegu, South Korea,
Summer 2014. The workshop consists of four two-hour meetings on Saturdays 10-12am.
The use of Nonparametric Bayesian Statistics was emphasized and the workshop
covers (i) Difficulties in using MCMC algorithms (ii) Hierarchical models (iii) Survey
sampling and (iv) Polya trees.
TRIPS TO THE SOUTH
Fouth trip was to Kyungpook National University, Daegu, South Korea,
during the summer 2014. On this occasion Bal was a Visiting Global Scholar.
Third trip in South Korea was made to Kyungpook National University,
Daegu, South Korea, June 2012.
May 29, 2011 to June 8, 2011 Bal made his second visit to Korea.
He visited Yonsie University in Seoul and Kyungpook National
University in Taegu. He visited many places in the vicinity of
Seoul guided by Hyunjoong and Mijung, and many places in the
vicinity of Taegu, guided by Dalo and his students. He also took a
two-day bus tour to Wando Island from Seoul, guided by Jai.
August 2001 Bal visited Korea for ten days. He made a great
presentation in Taejon, and visited many places in Seoul, guided
by Geunshik Han. This is the first time Bal visited that part of
TRIPS TO THE
My second trip to the Philippines was in February 1-14, 2004. I
visited De La Salle University in Manila, the Universities of the
Philippines at Los Banos in Laguna and at Diliman in Quezon City.
I also visited the Statistical Research and Training Center (an
office of the Filipino government) in Quezon City. This trip was
mostly covered by the U.S. Department of Health and Human
Services, and partially by De La Salle University and the
Statistical Research and Training Center.
I gave my technical talk on ``Bayesian Analysis of Nonignorable
Missing Categorical Data: An Application to Bone Mineral Density
and Family Income" on three different days at each of the three
universities. Lawrence Cox and Jai Choi are co-authors on this
Beside my technical talk, I also spoke on two other subjects. At
De La Salle University I gave a one-hour talk on ``How to advise
graduate students?" People attended from many departments on
Campus and other universities. At the Statistical Research and
Training Center I gave another one-hour talk on ``Monitoring the
Health of the US Population: National Center for Health
Statistics" and the audience was well represented by people from
many government departments. I received a very warm welcome: The
National Anthem of the Philippines was played in my honor.
I also spent several hours advising faculty and graduate students
at the three Universities. Currently I am an Associated Faculty at
the University of the Philippines. I also worked very hard with my
PhD students at the University of the Philippines, Diliman.
On each day in the Philippines, after jugging on the beach near
the U.S. Embassy, a huge complex, I drank a very delicious young
coconut and ate the jelly for just twenty U.S. cents. (The cost in
New York City is US $3.50, and you can't have it with such style!)
There were three other highlights of my trip. I ate at the Banana
Leaf Restaurant (yes, on banana leave) and at the Crocodile
Restaurant (no alligators though), both in Makati, a well
developed business area. The faculty of the Mathematics Department
of De La Salle University finally treated me at the elaborate
buffet of the Kamayan Restaurant; Kamayan Restaurant is a chain of
restaurants which specializes in native or Filipino cuisine and
"Kamayan" is a Filipino word which means "by hands".
For pleasure I had a one-day vacation on the island of Corrigdor
where the Spanish-American and the Japanese-American wars were
fought during World War II.
Finally, I would like to make two comments. I must thank my PhD
student, Corinne Burgos and 2003 winner of the ISI prestigious Jan
Tibergen Award, for the enormously successful organization of my
trip. Also, it is incumbent on me to say that, unlike many other
places I visited and lived, I found that Filipinos are extremely
pleased and satisfied with what they have.
My first trip to the Philippines was February 6-18, 2002. He was a
guest of De La Salle University (DLSU) and the University of the
Philippines at Los Banos (UPLB). At DLSU he gave a seven-hour
workshop in Bayesian Statistics, a one-hour discussion of his
research, and a seminar. At UPLB Corinne defended her Ph.D.
thesis, and Bal gave a seminar as well.
FIRST TRIP TO INDIA
My first trip to India, the land of my origin, was on December 26,
2004 - January 12, 2005. One of the things I did was to visit
Luckmanpur (Utter Pradesh), the place of origin of my
fore-parents. My trip started from Boston, MA, on the same day the
Tsumani struck. My flight went from Boston to Newark to Paris to
Bombay to Hyderabad, my first real stop in India December 28,
2004. On January 2, 2005, I flew to Delhi, where I was on
vacation. At Delhi I had the great adventure of visiting the Taj
Mahal, Agra. On December 5, 2005 I flown to Varanasi, Utter
Pradesh, the City for the Hindus. Here I had the great opportunity
to visit the home of my ancestors, Luckmanpur. Azamgarh is a city
about 100 kilometers north of Varanasi, and Luckmanpur, is a
village in the Paddy Fields, 20 kilometers north of Azamgarh. This
is an enormous achievement in my life: I am the first person in my
family line to return to the place of origin, and it took well
over a hundred years. On my return trip, I flew to Delhi, where I
spent three more days. Then, I flew to Bombay, where I spent just
one day. Then, I flew to London, and then on the Virgin Airlines
(all my international trip used Air India) to Boston. Pictures:
top panel - Hyderabad; middle panel - Delhi and Agra; bottom panel
- Varansasi and Luckmanpur.
SECOND TRIP TO INDIA
My second trip to India was to Kolkata, Banaras and Kochin. I
started from Boston, December 25, 2006, and returned to Boston,
January 8, 2007.
THIRD TRIP TO INDIA
My third trip to India was to Mumbai, Hyderabad and Visakhapatnam.
I started from Boston, December 28, 2009, and returned to Boston,
January 11, 2010. The highlight of my trip was the one-day
vacation in Mumbai at the Elephanta Caves in the Arabian sea. The
trip on the ship took one hour, we spent about two hours on the
island, and on the island we had a lunch of fish curry and rice.
FOURTH TRIP TO INDIA
On my fourth trip to India, December 30, 2012 to January 20,
2013, I visited Delhi, Chennai, Varanasi and Calcutta. I spoke at
the the International Indian Statistical Conference in Chennai
and the Bayesian meeting in Banaras Hindu University (plenary
speaker). I also spoke in the Department of Statistics,
University of Calcutta, the Indian Statistical Institute (BIRU),
Calcutta, and the Indian Agriculatural Statistics Research
Institute, New Delhi. In Delhi I stayed for two nights at the
Centaur Hotel in an unpleasant room. For the rest of my one-week
continual stay in Delhi, I lived in Hotel Saptagiri which was
excellent (Mr. Yadav, the owner, was very friendly). For my
four-day trip in Chennai I stayed at the Savera Hotel which was
excellent and I enjoyed their breakfast. In Banaras I stayed for
six days in Hotel Clarks which was good but with internet
problems. In Calcutta I stayed in the Ananya Guest House
(Ballygunge Phari, South Calcutta); the two young attendants at
the guest house were amusing. I was mostly a guest of Professor
Dhiman Bhadra in Calcutta (supported by Professor Kalyan Das of
the University of Calcutta).
TRIP TO AUSTRALIA
April 8 - 18, 2005 I visited Australia. April 8-13 I was in
Sydney, New South Wales, partially at the International
Statistical Institute (ISI) meeting. April 13-18 I was in Cairns,
Queensland, mostly at the the Fourth International Symposium in
Business and Industrial Statistics, a Satellite Conference of the
ISI. The Australians are very nice, and their economy appears to
be much ahead of the US. It is interesting that I have lived in
three continents of the world, and I have now visited three of the
other continents. Pictures: top panel - Sydney; bottom panel -
TRIPS TO OTHER COUNTRIES
In addition, I visited the following countries: Suriname, Trinidad
and Tobago, Morocco, Mexico, Spain (twice), Italy, Portugal,
Degrees with Fields, Institutions and Dates
- Ph.D., Statistics, University of Iowa, 1989
- M.Sc., Statistics, Imperial College, London, 1981
- Dip. Ed. (PWD), Mathematics Education, University of
Guyana, Guyana, 1979
- B.Sc. (PWD), Mathematics and Physics, University of Guyana,
- Visiting Global Scholar of Kyungpook National
University (KNU), Daegu, South Korea, Summer 2014. This is a very
competitive international program with thirteen scholars from more
than five countries, and I was the only one selected for the
Statistics Department at KNU.
- SPAIG Award was won by the WPI-NCHS partnership
based on my work with statisticians and scientists at the
National Center for Health Statistics (NCHS), 2006. The
American Statistical Association recognizes outstanding
statistical partnerships established between academe and
business, industry, and government (SPAIG). My students and I
have been working continuously with the NCHS for nearly ten
- Fellow of the American Statistical Association,
- Elected Member of the International Statistical
- Sinclair Professor of Mathematical Sciences,
- Elected Member of Sigma Xi, The Scientific
Research Society, 2004.
- Research Fellow of the American Statistical
Association and the National Center for Health Statistics,
January, 1999 - June, 2000.
- CDC Statistical Science Award is won by
``Nandram, B., Han, G. and Choi, J. W. (2002), A Hierarchical
Bayesian Nonignorable Nonresponse Model for Multinomial Data
from Small Areas, Survey Methodology, 28, 145-156," for the
best Applied Statistics paper, as judged by the Centers for
Disease Control and Prevention / Agency for Toxic Substances
and Disease Registry, 2003.
- Diploma of Imperial College , 1981.
- Commonwealth Scholar awarded by the Association
of Commonwealth Universities; work done at Imperial College,
- Irving Adler Prize for the Best Graduating
Student in Mathematics, University of Guyana, 1977.
Editorial and Advisory Boards
- Associate Editor, Journal of Survey
Statistics and Methodology (JSSAM)
- Associate Editor, Statistical
- Associate Editor, Journal of the
Indian Society of Agricultural Statistics
- Associate Editor,
ISRN Probability and
Statistics (Open Access), ended 2013
- Associate Editor, Case Studies in
Business, Industry and Government Statistics (CSBIGS),
- Associate Editor, Journal of
Modern Applied Statistical Methods (JMASM), not current
- Associate Editor, Journal of the
American Statistical Association (JASA - ACS), 2007-2012
- Associate Editor, The American Statistician (TAS),
- Advisory Board Member, Served as a health
services research and health policy expert on the Fellowship's
Board of Advisors for the Academy of Health Services Research
and Health Policy, DC, 2001-2004.
Areas of Research Interest
Applications of Bayesian Statistics to Survey Methodology and Small
Area Estimation, Discrete Multivariate Data, Nonignorable
Missing Data, Nonparametric Statistics, Computational Methods,
Data Science and Statistical Education.
Service at WPI and Other Institutions
- Professor at WPI: July, 2003 - present
- Associate Professor at WPI: July, 1995 - June, 2003
- Assistant Professor at WPI: July, 1989 - June, 1995
- Lecturer I & II at University of Guyana: July, 1981 -
- Instructor at Unniversity of Guyana: July, 1977 - August,
- Assistant Master, Golden Grove Government Secondary School,
Guyana: August, 1973 - August, 1974
Scientific and Professional Society Memberships
- American Statistical Association (ASA)
- International Indian Statistical Association (IISA), life
- International Statistical Institute (ISI)
- International Society for Bayesian Analysis (ISBA)
- Sigma Xi, The Scientific Research Society
Selected Refereed Publications
B. and Choi, J. W. (2010), A Bayesian analysis of body mass
index data from small domains under nonignorable nonresponse
and selection, Journal of the American Statistical
Association, 105, 120-135.
B. and Choi, J. W. (2002), Hierarchical Bayesian nonresponse
models for binary data from small areas with uncertainty
about ignorability, Journal of the American Statistical
Association, 97, 381-388.
Nandram, B., Sedransk, J., and Pickle, L. (2000), Bayesian
analysis and mapping of mortality rates for chronic
obstructive pulmonary disease, Journal of the American
Statistical Association, 95, 1110-1118.
B., Sedransk, J., and Smith, S. J. (1997),Order restricted
Bayesian estimation of the age composition of a population
of Atlantic cod, Journal of the American Statistical
Association , 92, 33-40.
Nandram, B. and Sedransk, J. (1993), Empirical Bayes
estimation for the finite population mean on the current
occasion, Journal of the American Statistical
Association , 88, 994-1000.
MA2611, Applied Statistics I, Term A, 2014
Sample Lab Report
Some important results
MA3631, Mathematical Statistics, Term B, 2014
MA547, Design of Observational Studies and Sample Surveys, Fall 2014
MA556, Applied Bayesian Statistics, Spring 2015
c. Bayesian Books,
Papers and Journals
MA656, Advanced Bayesian Statistics, Spring 2015
MA656 is a second course in Bayesian Statistics at WPI and it consists of
three advanced Bayesian topics, Parametric Bayesian Statistics, Computational
Bayesian Statistics and Nonparametric Bayesian Statistics. The materials
covered will be taken from the following interesting and informative papers.
MA541-4632, Probability and Mathematical Statistics I, Spring 2014
Contact me at email@example.com.
Department of Mathematical Sciences, Stratton Hall
Worcester Polytechnic Institute
100 Institute Road, Worcester, MA 01609
Voice: 508-831-5539; Fax: 508-831-5824
Last modified: June 27, 2012: Wednesday 10:00 pm