A. Audu

On the Efficiency of Modified Regression-type Estimators Using Robust Regression Slopes and Non-conventional Measures of Dispersion

A. Audu, A. Gidado, N. S. Dauran, S. Buda, S. A. Abdulazeez & M. A. Yunusa · Asian Research Journal of Mathematics · 2022

Supplementary variables associated with the study variables have been identified to be helpful in improving the efficiency of ratio, product and regression estimators both at planning and estimation stages. The existing regression-based estimators are functions of regression slop...

Open access Research Article 10.9734/arjom/2022/v18i230356

Modified Classes of Regression-Type Estimators of Population Mean in the Presences of Auxiliary Attribute

A. Audu, S. A. Abdulazeez, A. Danbaba, Y. M. Ahijjo, A. Gidado & M. A. Yunusa · Asian Research Journal of Mathematics · 2022

The use of relevant information from auxiliary variable at the estimation stage and design stage to obtain reliable and efficient estimate is a common practice is a sample survey. But situations arise when the available auxiliary information are attribute in nature. There are som...

Open access Research Article 10.9734/arjom/2022/v18i130355

Regression-type Imputation Class of Estimators using Auxiliary Attributes

A. Audu, O. O. Ishaq, A. Abubakar, K. A. Akintola, U. Isah, A. Rashida & S. Muhammed · Asian Research Journal of Mathematics · 2021

Several imputation schemes and estimators have been proposed by different authors in sample survey. However, these estimators utilized quantitative information of auxiliary characters. In this study, some imputation methods were studied using qualitative information of auxiliary...

Open access Research Article 10.9734/arjom/2021/v17i530296