نتایج جستجو برای: simple random sampling was used first
تعداد نتایج: 6053876 فیلتر نتایج به سال:
The purpose of this paper is to find the estimate of the parameters of k and g distribution for ranked set sample by numerically maximizing the likelihood function. The estimates named as numerical maximum likelihood estimate, and corresponding mean square error and relative efficiency compared to simple random sampling are computed using a computer simulation. Ranked set sampling is seen t...
the study objects for investigating the possibility of activating both audit committee and board of directors for restricting the practices of earnings management phenomenon. to achieve this objective, a questionnaire had been developed and self-administered for a selected sample consists of 123 auditors working in jordan based on the simple random sampling method. the study first hypothesis is...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
this study aims to investigate the effective factors on non-development of tourism industry in golestan province. the standard questionnaires are used to doing this descriptive, cross-sectional and tentative that those be scattered after measuring their validity and reliability based on simple-random sampling(for tourists) and taxonomy-sampling(for experts) between tourists and experts. the ana...
Sensitivity analysis is a key part of a comprehensive energy simulation study. Monte-Carlo techniques have been successfully applied to many simulation tools. Several sampling techniques have been proposed in the literature; however to date there has been no comparison of their performance for typical building simulation applications. This paper examines the performance of simple random, strati...
in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...
in this study, the relationship between teachers’ creative and critical thinking skills and their reflectivity in teaching was investigated. to this end, three questions were raised. these questions were intended to determine whether there was a significant relationship between teachers’ creative thinking skills and their reflectivity in teaching; whether there was a significant relationship be...
The present study aimed to investigate the accuracy and precision estimation of the number, basal area and volume of the standing trees by methods of random and systematic random sampling in the forests of West Guilan. The cost or inventory time was determined using the criteria (E%2 × T). Inventory was carried out by complete sampling (census) in an area of 52 hectares. The study area (sect...
this study was designed to investigate the impacts of teachers self-disclosure on students foreign language classroom anxiety, attitude to english language learning and their achievement scores at the end of the term. there were 48 female learners of intermediate level. they were not randomly selected. there were one experimental group with 21 students and one control group with 27 students.the...
this is a descriptive comparative field study. the aim is to describe views of male nurses and teachers about increasing population and then compare the view with each other. sample was 40 male nurses and 40 male teachers which selected by simple random sampling. the tool for data gathering was a questionnaire with three parts. the first part was demographic data, the second and third part were...
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