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STM JOURNALSScientific Technical Medical
www.stmjournals.com
May - August 2014
(RRJoST)ISSN : 2348-7909
Research & Reviews Journal of Statistics
STM Publication, a strong initiative by Consortium E-Learning Network Private ltd.(Estd. 2006) was launched in the
year 2010 under the support and guidance by our esteemed Editorial and Advisory board members from renowned
institutes.
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Research & Reviews : Journal of Statistics
Focus and Scope Covers
Research & Reviews : Journal of Statistics is published (frequency: three times a year) in India by STM Journals
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ISSN: 2278-2273 (Online), ISSN: 2348-7909 (Print)
?Theoretical and Computational Statistics
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Mr. Puneet Mehrotra
Managing Director STM Journals, Consortium eLearning Network Pvt. Ltd.(CELNET)
Noida, India.
Group Managing Editor Dr. Archana Mehrotra
DirectorCELNET, Delhi, India
Puneet Pandeya
ManagerMonika Malhotra
Assistant Manager
Assistant Editors
Aditya Sanyal
Anupama Garg
Himani Pandey
Publication Management Team
Internal Members
External Members
Dr. Bimlesh Lochab
Industrial Tribology Machine Dynamics & Maintenance
Engineering Centre (ITMMEC)
Indian Institute of Technology Delhi, India
Prof. S. Ramaprabhu
Alternative Energy Technology Laboratory,
Department of Physics,
Indian Institute of Technology, Chennai, India
Dr. Rajiv Prakash
School of Materials Science and Technology,
Institute of Technology, Banaras Hindu University,
Varanasi, India
Dr. Rakesh Kumar
Assistant Professor, Department of
Applied Chemistry, BIT Mesra,
Patna, India
Associate Editors
Gargi Asha Jha
Nupur Anand
Priyanka Aswal
Sona Chahal
STM Journal (s) Advisory Board
Dr. Ashish RunthalaLecturer, Biological Sciences Group,
Birla Institute of Technology & Science, Pilani Rajasthan, India.
Dr. Baldev Raj
Former Director, Indira Gandhi Centre for Atomic Research, India.
Chairman, National Institute of Technology Puducherry, India.
Dr. Baskar KaliyamoorthyAssociate Professor, Department
of Civil Engineering National Institute of Technology Trichy, India.
Prof. Bankim Chandra RayProfessor and Head, Department of
Metallurgical and Materials Engineering National Institute of Technology,
Rourkela, India.
Prof. D. N. Rao Professor, Department of Biochemistry,
AIIMS, New Delhi, India.
Prof. Jugal KishoreProfessor, Department of Community
Medicine, Maulana Azad Medical College, New Delhi, India.
Dr. Pankaj PoddarScientist, Physical & Materials ChemistryDivision, National Chemical Laboratory,
Pune, India.
Dr. Hardev Singh VirkProfessor Emeritus, Eternal
University, Baru Sahib, India.
Dr. Nandini Chatterjee SinghAssociate Professor,
National Brain Research Centre, Manesar, India.
Dr. Shankargouda PatilAsst. Prof., Department of Oral
Pathology, KLE Society's Institute of Dental Sciences, Bangalore, India.
Prof. Subash Chandra MishraProfessor, Metallurgical & Materials
Engineering Department, NIT, Rourkela, India.
Prof. Yuwaraj Marotrao GhugalProfessor and Head Department, Govt.College of Engineering Station Road,
Osmanpura, Aurangabad, India.
Prof. Sundara RamaprabhuProfessor, Department of Physics
Indian Institute of Technology Madras, India.
Dr. Shrikant Balkisan DhootHead Research & Development,
Nurture Earth R&D Pvt LtdMIT Campus, Beed bypass road,
Aurangabad, India.
Dr. Rakesh KumarAssistant Professor,
Department of Applied Chemistry, BIT Mesra, Patna, India.
Dr. Priyavrat TharejaHead, Materials and Metallurgical
Engineering Department, PEC University of Technology,
Chandigarh, India.
STM Journal (s) Advisory Board
Editorial Board
Dr. Manjunatha Prasad KaranthaDepartment of Statistics, Health Science Library Building, Manipal University,
India.
Kedar Nath Singh Yadava Deptt. of Statistics, BHU, Varanasi-5,
India.
Vijay Kumar SinghDepartment of Statistics, Banaras Hindu
University, Varanasi – 221005, India.
Prof. Satyanshu Kumar UpadhyayStatistics Professor, Department of Statistics, Banaras Hindu University, Varanasi-221005,
India.
Professor Somanath BaghProfessor of Statistics, School Of
Mathematical Sciences, Sambalpur University, Jyotivihar-768019,Orissa, India.
R. VijayaraghavanDepartment of Statistics, Bharathiar
University, Coimbatore 641 046,Tamil Nadu, India.
Prof. Harinder Singh Professor & Head Department of
Mathematics, Jaypee University of Information Technology, Waknaghat ,
India.
Rajyaguru Arti Department of Statistics
Veer Narmad South Gujarat University,Udhna Magdalla Road.
Arijit ChaudhariHonorary Visiting Professor,
Applied Statistics Unit, Indian Statistical Institute, India.
Dr. Balkishan Sharma Associate Professor (Biostatistics),
Department of Community Medicine, Sri Aurobindo Medical College and P. G.
Institute, Indore (M. P.), India.
I take the privilege to present the hard copy compilation for the [Volume 3 Issue (2)] of Research &
Reviews: Journal of Statistics. The intension of RRJoST is to create an atmosphere that stimulates
creativeness, research and growth in the area of Journal of Statistics.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. RRJoST provides an outlet for Research findings
and reviews in areas of Statistics found to be relevant for National and International recent
developments & research initiative.
The aim and scope of the Journal is to provide an academic medium and an important reference for
the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Statistics.
Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for
their continued support and invaluable contributions and suggestions in the form of authoring write-
ups/ reviewing and providing constructive comments for the advancement of the journals. With
regards to their due continuous support and co-operation, we have been able to publish quality
Research/Reviews findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Coefficient Estimation of Regression Model and Hypothesis Testing by Bootstrap Method Md. Siddikur Rahman 1
2. A Generalized Product Method of Estimation in Two Phase Sampling Balkishan Sharma, Housila P. Singh, Rajesh Tailor 8
3. Mann-Whitney Test for Imprecise ObservationsV. S. Vaidyanathan 16
4. Construction of Neighbour Balanced Nested Row Column Designs and µ-Resolvable All Order Neighbour Balance Design by using Mutually Orthogonal Latin SquaresAatish Kumar Sahu, Anurup Majumder 21
ContentsResearch & Reviews : Journal of Statistics
RRJoST (2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Statistics ISSN: 2278-2273 (online), ISSN: 2348-7909 (print)
Volume 3, Issue 2
www.stmjournals.com
Coefficient Estimation of Regression Model and
Hypothesis Testing by Bootstrap Method
Md. Siddikur Rahman
Department of Statistics, Begum Rokeya University, Rangpur, Bangladesh
Abstract The main concern of statistical inference is to achieve accurate result and to make proper
decision on the basis of sample observations. But in some practical cases, it is not
possible to reach the goal of statistics for the lack of desired number of sample. When the sample size is small and/or the empirical distribution is unknown, we have to use
bootstrapping method to increases the accuracy of the results. The bootstrap method of
regression analysis is discussed in this paper with practical example. In small sample case, there is a possibility of violating the normality assumption of the error. To avoid
this problem, the bootstrap method gives us better result. A key objective in classical testing of statistical hypothesis is achieving good power of the test. To compare the
existing simulation based test approach to bootstrap approach test, we calculated the
power of the test and then graphically shown in this paper. We have conducted a hypothesis testing of regression coefficient. We observe that power of the test with
bootstrap approach is much higher than the power of simulation approach. Actually, the power of the tests is compared and the better result of bootstrap method is found.
Keywords: Linear Regression model, Regression coefficient, Hypothesis testing,
Bootstrapping
RRJoST (2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Statistics ISSN: 2278-2273 (online), ISSN: 2348-7909 (print)
Volume 3, Issue 2
www.stmjournals.com
A Generalized Product Method of Estimation in
Two Phase Sampling
Balkishan Sharma1*, Housila P. Singh
2, Rajesh Tailor
2
1Department of Community Medicine, Sri Aurobindo Medical College & P. G. Institute,
Indore, M. P., India 2School of Studies in Statistics, Vikram University, Ujjain, M. P., India
Abstract This paper proposes a generalized product type estimator for population mean using two
phase sampling in the presence of available knowledge on second auxiliary variable z,
when the population mean of the main auxiliary variable x is not known. It is shown that the proposed estimator is more efficient than the usual unbiased estimator, the double
sampling product estimator and Sahoo et al.’s estimator. An empirical study is carried out to assess the comparative performance of the proposed estimator over other
estimators.
Keywords: Study variate, Auxiliary variate, Bias, Mean squared error,
Double sampling
RRJoST (2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Statistics ISSN: 2278-2273 (online), ISSN: 2348-7909 (print)
Volume 3, Issue 2
www.stmjournals.com
Mann-Whitney Test for Imprecise Observations
V. S. Vaidyanathan* Department of Statistics, Pondicherry University, Puducherry, India
Abstract Mann-Whitney test is a non-parametric test that is used to identify whether the
probability distributions corresponding to two populations are identical. This article extends the Mann-Whitney test by treating the underlying observations as imprecise
values. The test procedure is developed by using a novel approach to rank fuzzy values based on the concepts of “Credibility Theory” proposed by Liu (2007) for studying the
behavior of fuzzy phenomena. Numerical illustration is provided through simulation by
representing the observations as triangular fuzzy numbers.
Keywords: Credibility measure, Fuzzy number, Membership function, Ranking fuzzy
values, Mann-Whitney test statistic
RRJoST (2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Statistics ISSN: 2278-2273 (online), ISSN: 2348-7909 (print)
Volume 3, Issue 2
www.stmjournals.com
Construction of Neighbour Balanced Nested Row Column
Designs and µ-Resolvable All Order Neighbour Balance
Design by using Mutually Orthogonal Latin Squares
Aatish Kumar Sahu1*, Anurup Majumder
2
1SASRD, Nagaland University, Medziphema, Nagaland-797106
2Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, W. Bengal-741252
Abstract Latin Squares are known to possess very unique features and so is its utility. Construction
of Balance Incomplete Block with nested Row Column (BIBRC) designs having Neighbor
Balanced properties have been developed on the concept of Mutually Orthogonal Latin Squares (MOLS) of strength v, v being natural number and if it has at least four MOLS
available. The designs used minimal blocks and found to be exact neighbor balanced with respect to rows, columns as well as diagonally. In the second part of this paper, concept
of MOLS is used in construction of µ-Resolvable Balance Incomplete Block Designs
following Subramani [1]. The designs fulfill the criteria of one-dimensional All Order Neighbor Balanced (AONB), developed with v number of treatments, v being natural
number, if and only if, there is availability of minimum two Mutually Orthogonal Latin
Squares for v. These designs showed all order neighbor balanced with minimal number of blocks at v(v–1)/2.
Keywords: BIB designs, BIBRC designs, Neighbor Balanced designs, µ-resolvable
designs, AONBD, OLS and MOLS