gholamreza khoshfar mahbobeh ilvari date of receive: 2014/12/9date of accept: 2015/5/11abstractthe present study was conducted to identify the relationship between religiosity and marital adjustment. since religion influences family relationships and regarding the fact that in the present conditions the strength of religious values in the family is one of the goals of our islamic society, condu...

Double robust extreme ranked set sampling (DRERSS) and its properties for estimating the population median are suggested. The performance of DRERSS with respect to simple random sampling (SRS), ranked set sampling (RSS) and extreme ranked set sampling (ERSS) schemes is considered. Real data set that consist of heights of 346 students are used to evaluate the DRERSS method. It is found that when...

In sampling theory, a wide variety of techniques is used to obtain efficient estimators for the population mean. The commonly used method to obtain the estimator for population mean is simple random sampling without replacement (SRSWOR) when there is no auxiliary variable available. There are methods that use the auxiliary information of the study characteristics. If there exists an auxiliary v...

the purpose of present research was studying the educational need assessment of greenhouse holders growing ornamental plants and flowers about applying alternative energies. this research is application with descriptive- correlative method. statistical community was 499 subjects of greenhouse holders of ornamental plants and flowers in tehran province. by using simple random sampling method and...

this study investigates the effect of women's employment on family and social relations in the city of aran & bidgol. the theoretical framework of research is role conflict theory. survey methods is used in this study and the statistical population included all women working in the city of aran & bidgol. using cochran's formula and simple random sampling, 250 married women were select...

Supporting sampling in the presence of joins is an important problem in data analysis. Pushing down the sampling operator through both sides of the join is inherently challenging due to data skew and correlation issues between output tuples. Joining simple random samples of base relations typically leads to results that are non-random. Current solutions to this problem perform biased sampling o...

This study examines the efficiency of EPI cluster sampling in assessing the prevalence of diarrhoea and dysentery. A computer was used to simulate fieldwork carried out by a survey taker. The bias and variance of prevalence estimates obtained using EPI cluster sampling were compared with those obtained using simple random sampling and cluster (stratified random) sampling. Efficiency ratios, cal...