نتایج جستجو برای: sample mean test
تعداد نتایج: 1611506 فیلتر نتایج به سال:
The mean and the variance value of a random variable play an important role in statistical analysis. Sometimes the available observations are not precise, and we want to test the hypotheses of mean and variance in such environment. Hence, in this paper, we first extend and introduced L2−metric based on imprecise (fuzzy) observations, and then, the concepts of fuzzy test statistics are defined b...
this study was intended to analyze the listening tapescripts of the elementary and pre-intermediate levels of total english textbooks from the pragmatic dimension of language functions and speech acts in order to see whether the listening tasks are pragmatically informative or not. for this purpose, 8 conversations from the two books were selected randomly, and then, the two pragmatic models of...
دراین پژوهش تاثیر آموزش لغات از طریق عبارات واژگانی (lexical phrases) بر یادگیری آنها بررسی شده است . بدین منظور یک گروه همگن متشکل از 64 دانش آموز مقطع پیش دانشگاهی به صورت تصادفی به دو گروه دیگر تقسیم شدند . در گروه a که شامل 32 دانش آموز بود ، لغات جدید در بافتهای عبارات واژگانی تدریس شد . در گروه b که شامل 34 دانش آموز ، همان لغات در بافت های معمولی (ordinary & manipulated con...
چکیده ندارد.
The Student’s t Test. A very common problem in statistics is to estimate the population mean of a probability distribution given a sample, the subject of sections 7.1 and 7.2 of the statistics textbook. As explained there, this relates directly to the so-called t test. For large samples we may assume, due to the central limit theorem, that the sample mean is normally distributed; one often cons...
irrigation management transfer (imt) is under implementation within 63 countries over the world. the results and constraints of this event have been different in mentioned countries. this research objected to survey of imt constraints and identifies its key indicators in ghazvin and moghan pilots with different characteristics in type of irrigation and their imt process. the research method is ...
This study was conducted on a comparative basis concerning strategic agility among manufacturing industries in Semnan City, Iran. It uses descriptive and survey method. Research population is consisted of the managers and experts of construction chalk, textile, chemicals and tiles industries in Semnan City. A number of 65 experts and managers of the under study industries were selected via conv...
the present study sought to examine whether a task-based approach could have an impact on raising awareness of collocations. moreover, it sought to investigate the facilitative role of consciousness-raising tasks of collocations in the communicative instances of use. to this end, 68 intermediate learners of english were selected via a placement test. the participants were taught with classroom ...
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
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