We propose some ratio-type variance estimators using ratio estimators for the population mean in literature. We obtain mean square error (MSE) equations of proposed estimators and show that proposed estimators are more efficient than the traditional ratio estimator, suggested by [C.T. Isaki, Variance estimation using auxiliary information, Journal of the American Statistical Association 78 (198...

Genome enabled prediction provides breeders with the means to increase the number of genotypes that can be evaluated for selection. One of the major challenges in genome enabled prediction is how to construct a training set of genotypes from a calibration set that represents the target population of genotypes, where the calibration set is composed of a training and validation set. A random samp...

Purpose: The main is to assess the impact of intelligent leadership in Kenyan universities on knowledge sharing behavior. Approach/Methodology/Design: research was motivated by Path Target Theory. An explanatory design adopted with a positivism approach. target population consisted 6400 and selection 366 academic workers from 14 chattered Nairobi County universities. study used stratified techn...

Software reliability testing provided the necessary guarantee for improving software reliability level and estimation. The traditional method for generating software reliability test cases could be seen as a simple random sampling, which was randomly choosen according to the operational profile defined by Musa. The stratified sampling was well known as a complex but more accurate sampling appro...

This paper considers the design of acoustic surveys for estimating the mean abundance of spatially correlated populations. We examined how the choice of survey design affects the bias and precision of the sample mean as an estimator of mean abundance. Further, we investigated three different ways of estimating the error variance of the sample mean: the pooled within strata variance and two geos...

This study comparatively analyzed the research output of academics in public and private universities South-East, Nigeria. Three questions were formulated for three hypotheses tested at 0.05 level significance. Ex post facto design was used study. Multistage sampling procedure involving proportionate disproportionate stratified sampling, simple random to draw a sample size 1,119 (896 from 1,762...

BACKGROUND Occupational stress is a psychosocial dimension of occupational health concept on social determinants of health, especially, job & environmental condition. Recently, staff network of different government universities of Thailand have called higher education commission, and Ministry of Education, Thailand to resolve the issue of government education policy (e.g. wage inequity, poor we...