نتایج جستجو برای: mean standard deviation model
تعداد نتایج: 2949002 فیلتر نتایج به سال:
the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...
this study was an attempt to investigate the effect of subtitling on vocabulary learning among iranian intermediate students. to find the homogeneity of the groups, tofel test was administered to student in kish mehr institute in garmsar. after analyzing the data, 60 participants (female students) who scored within the range of one standard deviation above and below the mean, were selected as h...
in this paper, we consider portfolio selection problem in which security returns are regarded as fuzzy variables rather than random variables. we first introduce a concept of absolute deviation for fuzzy variables and prove some useful properties, which imply that absolute deviation may be used to measure risk well. then we propose two mean-absolute deviation models by defining risk as abs...
در این تحقیق تاثیر دو بازخورد اصلاحی prompt , recast بر صحت نگارش زبان آموزان در آموزش پردازش داده محور و در آموزش معنادار بازده محور بررسی می شود.64 دانش آموز که نمره یک standard deviation بالا و پایین mean در تست pet داشتند به عنوان نمونه از بین 74 نفر انتخاب شدند . دانش آموزان بر اساس صحت نگارش نیز بررسی شدند و 60 دانش آموز به عنوان شرکت کنندگان این تحقیق برگزیده شدند ، سپس به دو گروه 30 نفر...
In this paper, we consider portfolio selection problem in which security returns are regarded as fuzzy variables rather than random variables. We first introduce a concept of absolute deviation for fuzzy variables and prove some useful properties, which imply that absolute deviation may be used to measure risk well. Then we propose two mean-absolute deviation models by defining risk as abs...
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