Dr ahmed audu

Regression-cum-exponential ratio imputation class of estimators of population mean in the presence of non-response

Ahmed audu, ishaq olatunji olawoyin, yahaya zakari, daniel dauda wisdom, jamiu muili, abdulaziz mohammed ndatsu
Date : 2019-09-20
Views : 753 Download : 242
http://dx.doi.org/10.5455/sf.71109
Experiments, for example, medical and social science surveys, conducted by human are often characterized by the problem of non-response of missing observations. In this study, an alternative imputatio...

Energy of inverse graphs of dihedral and symmetric groups

O. ejima , k. o. aremu , a. audu
Date : 2019-12-18
Views : 979 Download : 249
https://doi.org/10.1186/s42787-020-00101-8
Let (G, ∗) be a finite group and S = {x ∈ G|x = x−1} be a subset of G containing its non-self invertible elements. The inverse graph of G denoted by (G) is a graphwhose set of ver...

On the linear combination of sample variance, ratio, and product estimators of finite population variance under two-stage sampling

Olatunji olawoyin ishaq, ahmed audu, auwalu ibrahim, hassan s. abdulkadir, kabiru tukur
Date : 2019-09-20
Views : 616 Download : 244
http://dx.doi.org/10.5455/sf.90563
Ratio estimators are sometime to be found less efficient. There is very little research to estimate the variance of the population, so in this work, an attempt was made to estimate the variance of the...

Exponential type estimator for estimating finite population mean

Rajesh singh, prabhakar mishra, ahmed audu, supriya khare
Date : 2019-09-20
Views : 518 Download : 209
http://dx.doi.org/10.12785/ijcts/070104
In this paper, we suggest an exponential type estimator for estimating population mean under simple random sampling without replacement and also utilize this estimator for missing data under varied im...

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
Date : 2019-09-20
Views : 603 Download : 233
doi: 10.9734/ajrcos/2020/v6i130152
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 es...

A family of ratio-type estimators of finite population variance

Jamiu olasunkanmi muili, eric ndukaku agwamba, yahqub ayinde erinola, mojeed abiodun yunusa, dr. ahmed audu, muslihu adeyemi hamzat
Date : 2019-09-20
Views : 857 Download : 259
doi: 10.35629/5252-0204309319
This paper deals with the estimation of finite population variance. A class of ratio-type estimators is proposed for estimation of finite population variance of study variable. The purpose of this stu...

On the efficiency of imputation estimators using auxiliary attribute

Audu, a., ishaq, o. o., muili, j. o., zakari, y., ndatsu, a. m., muhammed, s.
Date : 2019-09-20
Views : 768 Download : 230
doi: 10.5281/zenodo.3721046
Surveys such as medical and social science surveys, human are often associated with observations. Several schemes and estimators have been suggested by authors like Singh and Horn (2000), Singh et al ...

Almost unbiased estimators for population mean in the presence of non-response and measurement error

Ahmed audu , rajesh singh , supriya khare, n. s. dauran
Date : 2019-09-20
Views : 512 Download : 230
https://doi.org/10.1080/09720510.2020.1759209
In this paper, we have proposed three classes of almost unbiased estimators for population mean under simultaneous presence of measurement and non-response error. Asymptotic properties such as Bias an...

Modified estimators of population mean using robust multiple regression methods

A. audu, o. o. ishaq, j. o. muili, a. abubakar, a. rashida, k. a. akintola, u. isah
Date : 2019-12-18
Views : 365 Download : 256
10.37933/nipes/2.4.2020.2
Efficiency of estimators can be improved by using the information of multi-auxiliary variables associated to the study variable [1]. [2] and [3] suggested robust estimators with single auxiliary var...

On the class of exponential-type imputation estimators of population mean with known population mean of auxiliary variable

A. audu, o. o. ishaq, u. isah, s. muhammed, k. a. akintola, a. rashida, a. abubakar
Date : 2019-12-18
Views : 840 Download : 215
10.37933/nipes/2.4.2020.1
This paper considered a new class of exponential-type imputation scheme and the point estimator of the proposed scheme for estimating population mean was derived. Members of the derived estimator fo...