# Dr. Wan Muhamad Amir Bin W Ahmad

Associate ProfessorUniversiti Malaysia Terengganu, Malaysia

**Highest Degree**

Ph.D. in Biostatistics from Universiti Sains Malaysia, Malaysia

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Universiti Malaysia Terengganu, Malaysia

**Highest Degree**

Ph.D. in Biostatistics from Universiti Sains Malaysia, Malaysia

**Share this Profile**

100%

Statistics

62%

Applied Mathematics

90%

Applied Sciences

75%

Physical Sciecnes

55%

- Rosdi, W.M.L.W., W.M.A.W. Ahmad, R. Hasan, N.A. Aleng and N.A. Halim
*et al*., 2016. An alternative method for logistic regression modeling in aquatic benthos: Comparison of three different phases of multiple logistic regressions. Middle-East J. Sci. Res., 24: 327-331.

Direct Link | - Rosdi, W.M.L.W., W.M.A.W. Ahmad and R. Hasan, 2016. An algorithm for weighted and bootstrap logistic regression modelling in benthic organism. J. Scient. Res. Dev., 3: 51-54.

Direct Link | - Hassan, S.N., W.S.W.A. Rahman, W.M.A.W. Ahmad, S. Mohamad, R. Hassan and S. Ghazali, 2016. DNA yield and concentration modeling by age, A260/280 and A260/230 ratios using Multiple Linear Regression (MLR), bootstrap and Response Surface Methodology (RSM). Int. J. Adv. Res., 4: 339-346.

CrossRef | Direct Link | - Hasan, R., W.M.A.W. Ahmad, N.A.N. Azmi, R. Ramli and N. Ghani
*et al*., 2016. Canonical Correspondence Analysis and path analysis model (CCA) applied to dental caries among children six and seven year olds, Bachok, Kelantan, Malaysia. Int. J. Adv. Res., 4: 1792-1799.

CrossRef | Direct Link | - Hasan, R., W.M.A.W. Ahmad, N.A. Aleng, R. Ramli and N. Ghani, 2016. Modeling on tooth filling towards dental caries and dental filling among children in Bachok, Kelantan, Malaysia: A structural equation modeling approached. Int. J. Applied Eng. Res., 11: 4243-4246.

Direct Link | - Amir, W.M., M.A.A. Nawi, N.A. Aleng and M. Shafiq, 2016. An alternative method for multiple linear model regression modeling, a technical combining of robust, bootstrap and fuzzy approach. J. Mod. Applied Stat. Methods, Vol. 15, No. 2. 10.22237/jmasm/1478004120.

CrossRef | Direct Link | - Amir, W.M., M. Shafiq, K. Mokhtar, N.A. Aleng and H.A. Rahim, 2016. Simple response surface methodology using SAS RSREG procedure. J. Mod. Applied Stat. Method, 15: 855-867.

Direct Link | - Amir, W.M., M. Shafiq, H.A. Rahim, P. Liza, A. Aleng and Z. Abdullah, 2016. Algorithm for combining robust and bootstrap in multiple linear model regression (SAS). J. Mod. Applied Stat. Methods, 15: 884-892.

Direct Link | - Ahmad, W.M.A.W., W.M.L.B.W. Rosdi, N.A. Aleng, N.N.F.B. Nordin and Z. Ali, 2016. Weighted least square logistic regression modelling for aquatic benthos. Int. J. Applied Eng. Res., 11: 10828-10831.

Direct Link | - Ahmad, W.M.A.W., R. Hasan, N.A. Aleng, N.A. Halim, S. Zakaria and Z. Ali, 2016. Effects of food expenses and tooth filling towards dental caries among children in Bachok, Kelantan, Malaysia: 3-D surface plots approached. J. Clin. Exp. Med. Sci., 4: 1-7.

CrossRef | Direct Link | - Ahmad, W.M.A.W., N.A.N. Azmi, N.A. Aleng, R. Hasan, Z. Ali and M.H. Harun, 2016. Modeling using modified Bayesian regression (method: A tumour size study). J. Scient. Res. Dev., 3: 7-11.

Direct Link | - Ahmad, W.M.A.W., N.A.N. Azmi, N.A. Aleng, M.S.B.M. Ibrahim and R. Hasan
*et al*., 2016. Modified Bayesian regression modeling involving qualitative predictor variables: A tumor size study. J. Scient. Res. Dev., 3: 14-19.

Direct Link | - Ahmad, W.M.A.W., N.A. Halim, N.A. Aleng, R. Hasan, Z. Ali, K. Mokhtar and S. Zakaria, 2016. Modified simple fuzzy nonparametric linear regression method: A technical approach. IOSR J. Math., 12: 29-36.

Direct Link | - Ahmad, W.M.A.W., M.A.A. Nawi and M. Mamat, 2016. A new strategy of handling general insurance modelling using applied linear method. Malaysian J. Applied Sci., 1: 45-54.

Direct Link | - Ahmad, W.M.A.W., H. Ruhaya, A.N. Azlida, R. Rosmaliza and G. Norhafizah, 2016. Assessing and modeling the factor that affected dental caries among preschool children in Bachok, Kelantan, Malaysia. Int. J. Public Health Clin. Sci., 3: 57-66.

Direct Link | - Nadiah, W.A., W.M.A.W. Ahmad, M. Mustapha, M. Mamat and N.N. Naing, 2015. Determinants of mortality in first-ever stroke patients in the Suburban Malaysia: A retrospective hospital-based study, 2005-2011. Iran. J. Public Health, 44: 1291-1293.

Direct Link | - Kassim, Z., K. Yunus, K.C.A. Jalal, I.N. Jaafar and N.S. Nordin
*et al*., 2015. Spatial distribution trend of plankton in Sungai Pulai estuary, the straits of Johor, Malaysia. Sains Malaysiana, 44: 1257-1262.

Direct Link | - Indiran, D., N. Abdul Halim and W.M.A.W. Ahmad, 2015. Estimating fundamental value and the size of rational speculative bubbles of Hong Kong Stock Market during the year 2008. Int. J. Financial Econ., 4: 1-7.
- Ahmad, W.M.A.W., S.A. Abdullah, K. Mokhtar, N.A. Aleng, N. Halim and Z. Ali, 2015. Applications of zero inflated models for health sciences data. J. Adv. Scient. Res., 5: 39-44.

Direct Link | - Ahmad, W.M.A.W., S. Zakaria, N.A. Aleng, N. Abdul Halim and Z. Ali, 2015. Box-cox transfromation and bootstrapping approach to one sample T-test. World Applied Sci. J., 33: 704-708.

Direct Link | - Ahmad, W.M.A.W., R.M. Piah, N.A. Aleng, S.B. Zakaria, N.A. Halim, R. Hasan and K. Mokhtar, 2015. A special approach of VON bertalanffy growth formula for the small sample size. Middle-East J. Scient. Res., 23: 2299-2301.

Direct Link | - Ahmad, W.M.A.W., N.S. Zafakali, N.A. Halim, N.A. Aleng and S. Zakaria, 2015. A study of an efficiency of handling overdispersion using poisson regression and zero inflated poisson regression: A thalasemia case study. J. Adv. Scient. Res., 6: 33-38.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N.A. Halim, Z. Ali and S. Zakaria, 2015. Combining of Response Surface Methodology (RSM), bootstrap and multiple logistics regression method to analyze an aquaculture data. World Applied Sci., 33: 1234-1240.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N.A. Halim, S. Zakaria, K. Mokhtar and R. Hasan, 2015. An alternative method for regression modelling: Algorithm for weighted robust regression. Middle-East J. Scient. Res., 23: 2559-2571.

Direct Link | - Veluplay, G.K., W.M.A.W. Ahmad, K. Mokhtar, P.L. Ghazali and N.A. Aleng, 2014. An approach of canonical correlation analysis, risk estimate analysis and response surface methodology towards factors that affecting the efficiency of management of vessels. J. Adv. Sci. Res., 5: 25-30.

Direct Link | - Veluplay, G.K., K. Mokhtar, W.M.A.W. Ahmad and N. Halim, 2014. Modeling and analysis of factors affecting inefficient management of vessels: a malaysian case study. Int. J. Innovation Res. Edu. Sci., 1: 25-31.

Direct Link | - Indiran, D., N.A. Halim and W.M.A.W. Ahmad, 2014. An application of Generalised Johansen-Ledoit Sornette (GJLS) model to detect size of rational speculative bubble in DJIA stock market during year 1997. Int. J. Scient. Technol. Res., 3: 309-314.

Direct Link | - Ibrahim, S., H. Hasaruddin, W.M.R.W. Hussin and W.M.A.W. Ahmad, 2014. Durability of coconut fronds as attractors for Fish Aggregating Devices (FADs): An observation based on leaf epidermis structure. AACL Bioflux, 7: 225-233.

Direct Link | - Halim, N.A., D. Indiran, W.M.A.W. Ahmad and M. Mamat, 2014. An analytical comparison between Standard Johansen-Ledoit-Sornette (SJLS) model and Generalized Johansen-Ledoit-Sornette (GJLS) model. Applied Math. Sci., 8: 2257-2267.

CrossRef | Direct Link | - G.K. Veluplay, W.M.A.W. Ahmad, K. Mokhtar, N. Halim and N.A. Aleng, 2014. Statistical approach of canonical correlation analysis, risk estimate analysis and response surface methodology towards factors affecting the efficiency of the management of vessels. Indian J. Commerce Manage. Studies, 5: 1-6.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N.A. Halim, M.P. Hamzah, N. Mohamed and Z. Ali, 2014. Students satisfaction levels towards services provided by health center Universiti Malaysia Terengganu (UMT). Int. J. Social Sci., 19: 73-87.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N. Halim, M. Mamat, M.P. Hamzah, A. Baharum and Z. Ali, 2014. A comparative and comprehensive analysis of perinatal and neonatal death using repeated measurement: A malaysia case study. Applied Math. Sci., 8: 2269-2288.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N. Abdul Halim, M.P. Hamzah, N. Mohamed and Z. Ali, 2014. Exposure and factors influencing the progression of diabetic nephropathy amongst type II diabetes mellitus patients in Seremban, Negeri Sembilan. IOSR. J. Dental Med. Sci., 13: 64-69.
- Ahmad, W.M.A.W., M.S.M. Ibrahim, N.A. Halim and N. Azlida, 2014. A comparative analysis of triglycerides level based on high density lipoprotein cholesterol in three distinct phases of blood pressure using multiple logistic regression. J. Adv. Sci. Res., 5: 12-18.

Direct Link | - Ahmad, W.M.A.W., M.A.B.A. Nawi, N.A. Aleng, N.A. Halim, M. Mamat, M.P. Hamzah and Z. Ali, 2014. Association of hypertension with risk factors using logistic regression. Applied Math. Sci., 8: 2563-2572.

Direct Link | - Ahmad, W.M.A.W., M. Shafiq, N.A. Halim and N.A. Aleng, 2014. A study of triglycerides level in three distinct phases of human blood pressure: A case study from previous projects. Applied Math. Sci., 8: 2289-2305.

CrossRef | Direct Link | - Ahmad, W.M.A.W., G.K. Veluplay, K. Mokhtar, N. Halim and N.A. Aleng, 2014. Comprehensive analysis of the factors that affecting the efficiency of the management of vessels using LRM, RSM and SEM. Int. J. Eng. Appl. Sci., 5: 1-15.

Direct Link | - Abdullah, Z. and W.M.A.W. Ahmad, 2014. A way of selecting the right statistical model for handling overdispersion and excess zeroes. IOSR J. Math., 10: 106-111.
- Zafakali, N.S. and W.M.A.W. Ahmad, 2013. Modeling and handling overdispersion health science data with zero-inflated poisson model. J. Mod. Applied Stat. Methods, 12: 255-260.

Direct Link | - Shafiq, M., W.M. Amir and NurFadhlina, 2013. Comparative comprehensive statistical modeling in different stage of blood pressure based on high density lipoprotein cholesterol level. Int. J. Adv. Comput. Sci. Technol., 2: 223-229.

Direct Link | - Mohamed, N., W.M.A.W. Ahmad, N.A. Aleng and M.H. Ahmad, 2013. Modeling multi layer feed-forward neural network on the influence of hypertension and diabetes mellituson family history of heart attack in male patients. Applied Math. Sci., 7: 2047-2053.

CrossRef | Direct Link | - Azrul, L.M., M.A. Adzemi, W.M.A.B.W. Ahmad and M.E.B.A. Wahid, 2013. Determination of toxicological effects of
*Terminalia catappa*leaves on Sprague-Dawley white rats in short-term period. Int. J. Toxicol. Applied Pharmacol., 3: 44-47.

Direct Link | - Aleng, N.A., W.M.A.W. Ahmad, N. Mohamed and N.N. Naing, 2013. Technical efficiency of growth and income fund in Malaysia: An application of Stochastic Frontier Analysis (SFA). Applied Math. Sci., 7: 5779-5790.

CrossRef | Direct Link | - Ahmad, W.M.A.W., N.B.A. Halim, N.A. Aleng, N. Mohamed, W.A.A.W.M. Amin and N.A. Amiruddin, 2013. Quantitative analysis on the level of acceptance, usage and problems of e-books among school teachers in terengganu. Int. J. Soc. Sci., 7: 89-101.

Direct Link | - Ahmad, W.M.A.W., N.B.A. Halim, N.A. Aleng, N. Mohamed, M.L. Abdullah and Z. Ali, 2013. Modeling of the acceptance of e-books among school teachers in terengganu, Malaysia. Applied Math. Sci., 7: 5791-5806.

Direct Link | - Ahmad, W.M.A.W., N.A. Halim and N.A. Aleng, 2013. A risk estimation of anemia disease among pneumonia patients using logistic regression model. Eur. J. Sci. Res., 100: 108-113.
- Ahmad, W.M.A.W., N.A. Aleng and N.A. Halim, 2013. Male and female differences in the High Density Lipoprotein (HDL) and progression of diabetic disease in coronary heart disease patients. Applied Math. Sci., 7: 1825-1838.

Direct Link | - Ahmad, W.M.A.W., M.A.A. Nawi and N.A. Aleng, 2013. Relative efficiency analysis industry of life and general insurance in Malaysia using Stochastic Frontier Analysis (SFA). Applied Math. Sci., 7: 1107-1118.

Direct Link | - Ahmad, W.M.A.W. and M.S.M. Ibrahim, 2013. High density lipoprotein cholesterol predicts triglycerides level in three distinct phases of blood pressure. Int. J. Sci.: Basic Applied Res., 10: 38-46.

Direct Link | - Abdul Rahman, N.S. and W.M.A.W. Ahmad, 2013. Influence by injection drug use in patients with HIV-TB. IOSR J. Dental Med. Sci., 10: 86-92.
- Nawi, M.A.A., W.M.A.W. Ahmad and N.A. Aleng, 2012. Efficiency of general insurance in Malaysia using Stochastic Frontier Analysis (SFA). Int. J. Mod. Eng. Res., 2: 3886-3890.

Direct Link | - Nawi, M.A.A., W.M.A.W. Ahmad and N.A. Aleng, 2012. Efficiency analysis life insurance industry in Malaysia using stochastic frontier analysis. Int. J. Adv. Eng. Sci. Technol., 2: 152-157.

Direct Link | - Mohamed, N., N.A. Aleng, W.M.A.W. Ahmad and M.H. Ahmad, 2012. Multilayer feed-forward neural network approach to lymphoma cancer data. Int. J. Contemp. Math. Sci., 7: 1749-1756.
- Mohamed, N., M.H. Ahmad and S.W.M.A.W. Ahmad, 2012. Forecasting short term load demand using Multilayer Feed-Forward (MLFF) neural network model. Applied Math. Sci., 6: 5359-5368.

Direct Link | - Ghazali, P.L., I. Mohd, W.M.A.W. Ahmad and M. Mamat, 2012. Implementation of integration model for all. J. Applied Sci. Res., 8: 1802-1812.

Direct Link | - Ghazali, P.L., I. Mohd, W.M.A.W. Ahmad and M. Mamat, 2012. Comparison of premium life tables existing model and integration model in family Takaful. J. Applied Sci. Res., 8: 3754-3762.

Direct Link | - Ghazali, P.L., I. Mohd, M. Mamat and W.M.A.W. Ahmad, 2012. Integration model in premium life table of family Takaful. J. Applied Sci. Res., 8: 3763-3776.

Direct Link | - Ghazali, P.L., I. Mohd and W.M.A.W. Ahmad, 2012. Integration model of education plan Takaful: A case study for Terengganu, Kelantan and Perlis, States in Malaysia. Far East J. Math. Sci., 65: 97-117.

Direct Link | - Aleng, N.A., W.M.A.W. Ahmad and N. Mohamed, 2012. Modelling of tuberculosis patients using multilayer feed forward neural network. Applied Math. Sci., 6: 2481-2488.

Direct Link | - Aleng, N.A., N. Mohamed, W.M.A.W. Ahmad and N.N. Naing, 2012. A new strategy to analyze medical data using a combination of M-estimator and multilayer feed-forward neural network model. Eur. J. Scient. Res., 73: 79-85.
- Ahmad, W.M.A.W., W.A.A.W.M. Amin, N.A. Aleng and N. Mohamed, 2012. Some practical guidelines for effective sample-size determination in observational studies. Aceh Int. J. Sci. Technol., 1: 51-53.
- Ahmad, W.M.A.W., W.A.A.B.W.M. Amin, N. Mohamed and N.A. Aleng, 2012. Ordinal and binary logistic regression analysis technique used in analyzing the categorical data: A case study of Terengganu State, Malaysia. Int. J. Adv. Eng. Sci. Technol., 2: 73-80.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, N. Mohamed and P.L. Ghazali, 2012. Ordinal logistic regression model for a new integration education plan Takaful. Eur. J. Scient. Res., 71: 109-116.
- Ahmad, W.M.A.W., N. Mohamed, N.A. Aleng and Z. Ali, 2012. Preliminary estimation of risk factors that associated with the prevalence of tuberculosis. Int. J. Adv. Eng. Sci. Technol., 2: 6-12.

Direct Link | - Ahmad, W.M.A.W., N. Mohamed, N.A. Aleng and Z. Ali, 2012. Influence of hypertension and diabetes mellitus on family history of heart attack in male patients. Applied Math. Sci., 6: 3259-3266.

Direct Link | - Ahmad, W.M.A.W., N. Mohamed, N.A. Aleng and P.L. Ghazali, 2012. A case study of acceptance model: A new integration model of education plan Takaful. Int. J. Adv. Eng. Sci. Technol., 1: 169-179.

Direct Link | - Mohamed, N., W.M.A.W. Ahmad, N.A. Aleng and M.H. Ahmad, 2011. Assessing the efficiency of multilayer feed-forward neural network model: Application to body mass index data. World Applied Sci. J., 15: 677-682.

Direct Link | - Mohamed, N., M.H. Ahmad, Suhartono and W.M.A.B.W. Ahmad, 2011. Forecasting short term load demand using Multilayer Feed-Forward (MLFF) neural network model. J. Software Eng. Technol., 3: 91-96.
- Ghazali, P.L.B., I.B. Mohd, M.B. Mamat and W.M.A.W. Ahmad, 2011. Mathematical modelling in family Takaful. J. Applied Sci., 11: 3381-3388.

CrossRef | Direct Link | - Ahmad, W.M.A.W., N.A. Aleng, Z. Ali and S.M. Abdul Malik, 2011. A logistic regression model for estimation of school teachers opinion: A case study of terengganu state, Malaysia. Int. J. Phys. Sci., 23: 143-150.
- Ahmad, W.M.A.W., N.A. Aleng, Z. Ali and S.A. Abdullah, 2011. Logistic regression approach to lymphoma cancer data. Eur. J. Sci. Res., 51: 448-456.
- Ahmad, W.M.A.W., N.A. Aleng, Z. Ali and A.B.A. Nawi, 2011. Modelling associated factors of HIV-infected Tuberculosis (TB) patients using path model analysis. World Applied Sci. J., 12: 1584-1584.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng and Z. Ali, 2011. Nonparametric regression approach to health sciences data. J. Konvergensi J. Ilmiah Mat., 1: 1-6.
- Ibrahim, M.A.H., M. Mustafa, A.Z.M. Sofi, M. Ismail and W.M.A.W. Ahmad, 2010. Alternative algorithms of broyden family
^{ami}: for unconstrained optimization. Proceedings of ICMS International Conference on Mathematical Science, November 11, 2010, AIP Conference Proceedings, pp: 670-680.

CrossRef | - Aleng, N.A., W.M.A.W. Ahmad, M. Mamat and Z. Isa, 2010. Analisis kecekapan relatif bagi industri saham amanah menggunakan pendekatan ekonometrik. Int. J. Manage. Stud., 17: 189-202.

Direct Link | - Ahmad, W.M.A.W., N.A. Aleng and Z. Ali, 2010. Some results on statistical analysis from unit of record, hospital universiti sains Malaysia. Univ. Islam Bandung, 10: 121-127.
- Ahmad, W.M.A.W., N.A. Aleng and Z. Ali, 2010. Binary logistic regression analysis technique used in analyzing the categorical data in education sciences: A case study of terengganu state, Malaysia. World Applied Sci. J., 9: 1062-1066.
- Aleng, N., W.M.A.W. Ahmad, N.N. Naing and Z.B. Ali, 2009. A study of hypertension and diabetic on logistics regression model. Int. J. Phys. Sci., 21: 229-231.
- Ahmad, W.M.A.W., N.N. Naing, Z. Ali and M. Mamat, 2009. Approximation of randomized block design to linear model. Int. J. Phys. Sci., 22: 241-246.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2009. The theoritical expansion of the box-cox transformation ideas. Int. J. Phys. Sci., 21: 235-240.
- Ahmad, W.M.A.W., N. Aleng, N.N. Naing and T.M.A.R. Hussein, 2009. An optimize poisson regression model for malaysia road accident: A case study in kuala lumpur. Int. J. Phys. Sci., 21: 308-310.
- Ahmad, W.M.A.W., N.N. Naing, T.M.A.R. Hussein and M. Mamat, 2008. Some theories and application for the power of trandformation in biostatistics study. J. EKSAKTA. Fakultas MIPA Univ. Islam Indonesia, 10: 43-49.
- Ahmad, W.M.A.W., N.N. Naing, T.M.A.R. Hussein and M. Mamat, 2008. Newton raphson approach to determine the power of transformation. Int. J. Phys. Sci., 20: 683-686.
- Ahmad, W.M.A.W., N.N. Naing, T.M.A.R. Hussein and D.M. Mamat, 2008. Using Newton method to gain the optimize λ values for the transformation. Int. J. Phys. Sci., 20: 145-149.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2008. A normality study of the effectiveness of different values of λ. Int. J. Phys. Sci., 20: 263-266.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2008. A case study: An approach of Newton method to gain better significant results for the transformation problem. Jurnal Kalam. Karya Asli Lorekan Ahli Matematik: 1: 138-148.
- Ahmad, W.M.A.W., N.N. Naing and N. Abdul Halim, 2008. An application of box-cox transformation to biostatistics experiment data. J. Biosains, Univ. Sains Malaysia, 19: 137-145.
- Abdul Halim, N., B. Musa, W.M.A.W. Ahmad and M. Mamat, 2008. Risk assessment for credit portfolio: A couple markov chain model. Proceedings of the Seminar On Science and Technology, October 29-30, 2008, Universiti Malaysia Sabah, Pusat Pengajian Sains dan Teknologi, pp: 232-234.
- Abd Halim, N., W.M.A.W. Ahmad and M. Mamat, 2008. An approach of non-homogenous hidden markov model to rainfall distribution: Malaysia case study. Int. J. Phys. Sci., 20: 443-446.
- Rosli, N. and W.M.A.W. Ahmad, 2007. A matrix variance inequality for k functions. J. Mat. Univ. Technol. Malaysia, 23: 1-8.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2007. Selection for parameter λ by using Newton-raphson method. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan Alam, Univ. Islam Bandun 7: 93-96.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2007. How to determine the sample size. Int. J. Phys. Sci., 19: 517-520.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2007. A modification of box-cox transformation. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan. Alam, Universitas Islam 7: 51-54.
- Ahmad, W.M.A.W., N.N. Naing and T.M.A.R. Hussein, 2007. A modification of box-cox transformation. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan Alam, Univ. Islam Bandun 7: 45-50.
- Ahmad, W.M.A.W., N. Rosli, N. Mohamed and Z. Ali, 2006. Identification Of time series model: An application part. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan Alam, Univ. Islam Bandun 6: 23-30.
- Ahmad, W.M.A.W., N.N. Naing and N. Rosli, 2006. An approached of box-cox data transformation to biostatistics experiment. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan Alam, Univ. Islam Bandun 6: 42-57.
- Ahmad, W.M.A.W., N. Mohamed, Z. Ahmad and M. Mamat, 2005. Proportional hazard regression analysis. J. Statistika, Jurusan Statistika, Fakultas Matematika and Ilmu Pengetahuan Alam, Univ. Islam Bandun 5: 19-21.
- Ahmad, W.M.A.W., N. Mohamed, Z. Ahmad and M. Mamat, 2005. Proportional hazard regression analysis by using survival data. J. Biosains, Univ. Sains Malaysia, 16: 107-111.