E. N. Agwamba

Modified Ratio-Cum-Product Estimators of Population Mean Using Two Auxiliary Variables

J. O. Muili, E. N. Agwamba, Y. A. Erinola, M. A. Yunusa, A. Audu & M. A. Hamzat · Asian Journal of Research in Computer Science · 2020

A percentile is one of the measures of location used by statisticians showing the value below which a given percentage of observations in a group of observations fall. A family of ratio-cum-product estimators for estimating the finite population mean of the study variable when th...

Open access Research Article 10.9734/ajrcos/2020/v6i130152

Ameliorated Class of Estimators of Finite Population Variance

J. O. Muili, E. N. Agwamba, A. B. Odeyale & A. Adebiyi · Asian Journal of Probability and Statistics · 2020

A class of ratio estimators of finite population variance is proposed in this study. The properties of the proposed estimators have been derived using Taylor’s Series method up to first order of approximation. The efficiency conditions which are the mean square errors (MSEs) and...

Open access Research Article 10.9734/ajpas/2020/v7i430189