نتایج جستجو برای: simple random sampling was used first
تعداد نتایج: 6053876 فیلتر نتایج به سال:
simple harmonizable processes (shp) introduced by soltani and parvardeh (2006) are a large class of nonstationary processes which includes stationary and periodically correlated (pc) processes. detection and estimation of shp structure are important problems when dealing with nonstationary data. in this paper, we study the spectral properties of simple processes and propose a method to detect a...
We propose a jackknife variance estimator for the population average from two, two-phase samples after imputation. The jackknife method has long been used to estimate and reduce bias, but has now become a valuable tool for variance estimation. We apply two different sampling methods, (simple random sampling and stratified random sampling) to derive jackknife variance estimators for the twosampl...
Purpose: The purpose of this study was to design and validation of a desirable model for developing critical thinking in the first-grade high school curriculum based on the upper documents of education in Iran. Methodology: This research is an evaluation study which the field research has been used in doing that. In this study, three methods were used to collect data. With reviewing the litera...
abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...
abstract pragmatics is the study of communicative action in its sociocultural context. communicative action includes not only using speech acts (such as apologizing, complaining, complimenting, and requesting), but also engaging in different types of discourse and participating in speech events of varying length and complexity. the present study aimed to investigate the assessment of pragm...
Data collection mechanism is a crucial factor for the performance of intrusion detection system (IDS). Simple random sampling and Stratified random sampling techniques of statistics are introduced to the procedure of data collection for IDS, and formulas used to calculate the sample size of packets based on these sampling techniques are presented. The implementation of packets sampling is provi...
introduction: the aims this ready project has done to determine relationship between mother’s personality traits with perfectionism and academic procrastination in first grade of high school girl students. group of studying in this search involve all girl student who studied in first grade of high school in robatkarim city. methods: this sample chose base on science contained 200 person by simp...
The purpose of this study is to investigate the relationship between moral intelligence and social support with social responsibility of first grade girls in Karaj. The purpose of this research is applied studies and The research method was descriptive-correlational. The population of this study was public first grade high school students in Karaj 1 district in the academic year 98-97. Sampling...
-The present paper deals with a modification on the selection of linear systematic sample of odd size. Consequently the proposed method is called modified linear systematic sampling. The performances of the modified linear systematic sampling are assessed with that of simple random sampling and linear systematic sampling for certain hypothetical populations. As a result, it is observed that the...
Recent research advocates applying sampling to accelerate microarchitecture simulation. Simple random sampling offers accurate performance estimates (with a high quantifiable confidence) by taking a large number (e.g., 10,000) of short performance measurements over the full length of a benchmark. Simple random sampling does not exploit the often repetitive behaviors of benchmarks, collecting ma...
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