S. Maqbool

Variance Estimation Using Linear Combination of Skewness and Quartiles

M. A. Bhat, S. Maqbool, S. A. Saraf, Ab. Rouf & S. H. Malik · Advances in Research · 2018

In this paper we have suggested Modified ratio type variance estimators where in our aim is to estimate the population variance in the presence of outliers, when there is strong correlation between auxiliary variable and study variable by using, the linear combination of skewness...

Open access Research Article 10.9734/AIR/2018/37321

Robust Estimators for Estimation of Population Variance Using Linear Combination of Downton’s Method and Deciles as Auxiliary Information

M. A. Bhat, T. A. Raja, S. Maqbool, N. A. Sofi, Ab. Rauf, S. H. Baba & Immad. A. Shah · Advances in Research · 2018

We have suggested improved and robust estimators for the estimation of finite population variance using non-conventional population parameters as auxiliary variables to enhance the efficiency of proposed estimators. A comparison between suggested estimators and existing estimator...

Open access Research Article 10.9734/AIR/2018/41956

Modified Variance Estimators for Non Response Problems in Survey Sampling

M. A. Bhat, T. A. Raja, S. Maqbool, S. A. Mir & Nageena Nazeer · Advances in Research · 2018

In this present study, we have discussed the issue of presence and absence of non-response that we often face in survey estimation. We have suggested the estimators to estimate the finite population Variance in the absence and presence of non-response, using the linear combinatio...

Open access Research Article 10.9734/AIR/2018/39643