the locus of control is a construct reflecting beliefs about the control of behavior and life events. according to this perception, people are grouped into two main categories: an internal and external locus of control. the main purpose of this study was to investigate the relationship between wheat yield performance, locus of control and wheat growers’ (wg) characteristics. survey research met...

This paper provides an updated review of Monte Carlo simulation. The use of random sampling, its consequences in simulation, the use of descriptive sampling, its advantages, its limits and its improvement upon the precision of simulation estimates: Refined descriptive sampling. This state of the art gives also an insight into other sampling procedures used in the literature, like Ranked set sam...

We extend the random permutation model to obtain the best linear unbiased estimator of a finite population mean accounting for auxiliary variables under simple random sampling without replacement (SRS) or stratified SRS. The proposed method provides a systematic design-based justification for well-known results involving common estimators derived under minimal assumptions that do not require sp...

the purpose of the research was to examine the relationship between educational administrators' brain quadrant dominance and the level of their performance effectiveness. by using stratified-random sampling method, 103 managers and 412 teachers were selected as the study sample; they were recruited from high schools in mashhad in 2008-2009 academic year. herrmann brain dominance instrument, wit...

INTRODUCTION The study of the distribution of any variable in marine environment generally begins by a sampling experiment. Usually, the collection of samples follows a procedure, often fixed in advance, that takes into account the general distribution of the water masses for a given region. However, much attention may be devoted to the actual structure of the water column present below the shi...