When faced with a P value that has failed to reach some specific threshold (generally P<0.05), authors of scientific articles may imply a “trend towards statistical significance” or otherwise suggest that the failure to achieve statistical significance was due to insufficient data. This paper presents a quantitative analysis to show that such descriptions give a misleading impression and underm...

We report the generation of a macroscopic singlet state in a cold atomic sample via quantum nondemolition measurement-induced spin squeezing. We observe 3 dB of spin squeezing and detect entanglement with 5σ statistical significance using a generalized spin-squeezing inequality. The degree of squeezing implies at least 50% of the atoms have formed singlets.

Objectives Dichotomizing continuous data prior to analysis is rarely a good idea as power is lost. However expressing results as a difference of means is not always meaningful for clinicians; small differences in means may seem clinically unimportant while the same study results expressed as a difference/ratio of proportions or number needed to treat might reveal an effect that is considered wo...

In comparing multiple treatments, 2 error rates that have been studied extensively are the familywise and false discovery rates. Different methods are used to control each of these rates. Yet, it is rare to find studies that compare the same methods on both of these rates, and also on the per-family error rate, the expected number of false rejections. Although the per-family error rate and the ...

Assessing genome-wide statistical significance is an important issue in genetic studies. We describe a new resampling approach for determining the appropriate thresholds for statistical significance. Our simulation results demonstrate that the proposed approach accurately controls the genome-wide type I error rate even under the large p small n situations.

هدف: پژوهش حاضر با هدف ساخت برنامه داربست‌سازی انگیزشی و تعیین اثربخشی آن بر جهت‌گیری‌های هدفی ارزیابی‌های شناختیوالدین انجام شد. روش: پس از طراحی آموزشی داربست سازی اساس نقشه نگاری مداخله، به منظور بررسی شبه‌آزمایشی طرح پیش‌آزمون ـ پس‌آزمون همراه پیگیری گروه گواه استفاده جامعه آماری شامل تمامی والدین ­دانش‌آموزان پایه هشتم منطقة 4 آموزش پرورش شهر تهران نمونة نیز 30 مادر دارای فرزند کلاس هفتم ب...