1. A.A. Sifawa and M.Z. Shehu; Modified Ratio-Cum-Product Type Estimator for Population Mean
in Simple Random Sampling Scheme. Himalayan Journal of Applied Medical Sciences and
Research, 2(5), 1-5 (2021).
2. A.K.P.C. Swain Finite Population Sampling: Theory and Methods. South Asia Publishers, New
Delhi, (2003).
3. A.K.P.C. Swain; On Some Modified Ratio and Product Type Estimators-Revisited. Investigaci´on
Operacional, 34(1), 35-57 (2003).
4. A.K.P.C. Swain; On an Improved Ratio Type Estimator of Finite Population Mean in Sample
Surveys. Investigaci´on Operacional, 35(1), 49-57 (2014).
5. B. Sharma and R. Tailor; A New Ratio-cum Dual to Ratio Estimator of Finite Population Mean in
Simple Random Sampling. Global Journal of Science Frontier Research, 10(1), 27-31 (2010).
6. B.V.S. Sisodia and V.K. Diwedi; A Class of Ratio-Cum-Product-Type Estimator. Biometrical
Journal, 23, 133-139 (1981).

7. D.T. Searls; The Utilization of Known Coefficient of Variation in the Estimation Procedure. Journal
of American Statistical Association, 59, 1125-1126 (1964).
8. H.P. Singh and M.R. Espejo; On Linear Regression and Ratio–Product Estimation of a Finite
Population Mean. Journal of the Royal Statistical Society: Series D (The Statistician), 52(1), 59-
67 (2003).
9. H.P. Singh; R. Tailor; R. Tailor and M.S. Kakran; An Improved Estimator of Population Mean
using Power Transformation. Journal of the Indian Society of Agricultural Statistics, 58(2), 223-
230 (2004).
10. H.P. Singh and P. Nigam; A General Class of Dual to Ratio Estimators. Pakistan Journal of Statistics
and Operation Research. 16(33), 421-431 (2020).
11. J. Subramani and G. Kumarapandiyan; A Class of Modified Ratio Estimators using Deciles of an
Auxiliary Variable. International Journal of Statistical Application, 2(6), 101-107 (2012).
12. J.E. Walsh; Generalization of Ratio Estimator for Population Total. Sankhya A, 32, 99-106 (1970).
13. L.N. Upadhyaya and H.P. Singh; Use of Transformed Auxiliary Variable in Estimating the Finite
Population Mean. Biometrical Journal, 41, 627-636 (1999).
14. M. Jerajuddin and J. Kishun; Modified Ratio Estimators for Population Mean using Size of the
Sample Selected from Population. International Journal of Scientific Research in Science,
Engineering and Technology, 2(2) 10-16 (2016).
15. M.N. Murthy; Sampling Theory and Methods. Statistical Publishing Society, Calcutta, (1967).
16. M. Subzar; T.A. Raja; S. Maqbool and N. Nazir; New Alternative to Ratio Estimator of
Population Mean. International Journal of Agricultural and Statistics Sciences, 12(1), 221-225
(2016).
17. M. Subzar; S. Maqbool; T.A. Raja and M. Shabeer; A New Ratio Estimators for Estimation of
Population Mean using Conventional Location Parameters. World Applied Sciences Journal, 35(3),
377-384 (2017).
18. M. Subzar; S. Maqbool; T.A. Raja and P . Sharma; A New Ratio Estimator: An Alternative to
Regression Estimator in Survey Sampling using Auxiliary Information. Statistics in Transition New
Series, 20, 181-189 (2019).
19. P.F. Perri; Improved Ratio-Cum-Product Type Estimators. Statistics In Transition-New Series,
8(1), 51-69 (2007).
20. P.V. Sukhatme; B.V. Sukhatme; S. Sukhatme and C. Asok; Sampling theory of surveys with
applications. Iowa State University Press, Ames and Indian Society of Agricultural Statistics,
New Delhi (1984).
21. R.K. Gupta and S.K. Yadav; Improved Estimation of Population Mean using Information on
Size of the Sample. American Journal of Mathematics and Statistics, 8(2), 27-35 (2018).
22. R.P. Chakrabarty; Some Ratio-type Estimators. Journal of Indian Society and Agricultural
Statistics, 31, 49-62 (1979).
23. S. Bandopadhyaya; Improved Ratio and Product Estimators. Sankhya, 42(C), 45-49 (1980).
24. S. Bahl and R. Tuteja; Ratio and Product Type Exponential Estimators. Journal of Information and
Optimization Sciences, 12(1), 159-164 (1991).
25. S. Choudhury and B.K. Singh; An Efficient Class of Dual to Product-cum-dual to Ratio Estimators of
Finite Population Mean in Sample Surveys. Global Journal of Science Frontier of Research
Mathematics & Decision Sciences, 12(3), 25-33 (2012).
26. S.K. Srivastava; An Estimator using Auxiliary Information in Sample Surveys. Cal. Stat. Assoc.
Bull., 16, 121-132 (1967).
27. T. Srivenkataramana; A Dual to Ratio Estimator in Sample Surveys. Biometrika, 67, 199-204 (1980).
28. V.N. Reddy; Ratio and Product Method of Estimation. Sankhya, B, 35(3), 307-316 (1973).
29. V.N. Reddy; On a Transformed Ratio Method of Estimation. Sankhya, C, 36(1), 59-70 (1974).
30. W.G. Cochran; Sampling Techniques. John Wiley, New York, (1977).
31. Z. Yan and B. Tian; (2010) Ratio Method to the Mean Estimation using Coefficient of Skewness
of Auxiliary Variable. In: Zhu, R., Zhang, Y., Liu, B. and Liu, C., Eds., Information
Computing and Applications, ICICA 2010, Communications in Computer and Information
Science, Vol. 106, Springer, Berlin, Heidelberg, 103-110. (2010