What does the p value really mean?
نویسندگان
چکیده
منابع مشابه
What does the p value really mean?
Consider an experiment in which 10 subjects receive a placebo, and another 10 receive an experimental diuretic. After 8 h, the average urine output in the placebo group is 769 mL, versus 814 mL in the diuretic group—a difference of 45 mL (Figure 1). How do we know if that difference means the drug works and is not just a result of chance? of 45 mL in the average urine output between groups unde...
متن کاملWhat is a p value and what does it mean?
Researchers aim to make the strongest possible conclusions from limited amounts of data. To do this, they need to overcome two problems. First, important differences in the fi ndings can be obscured by natural variability and experimental imprecision. Thus, it is diffi cult to distinguish real differences from random variability. Second, researchers’ natural inclination is to conclude that diff...
متن کاملWhat Does Exercise-Based Assessment Really Mean?
My commentary addresses Lance’s recommendation to reorient assessment center (AC) practice away from dimensions toward exercise-based assessment. As exercisebased assessment is dealt with only in general terms in Lance’s article, I aim to delineate what exercise-based assessment really means. Two points are made. First, I argue that taking dimensions away from ACs does not mean that assessee be...
متن کاملCoordinated care: what does that really mean?
The healthcare system in Australia is struggling to meet the healthcare needs of the ageing population. The pressure on health systems to solve these complex problems can create a sense of urgency to find a panacea in concepts such as coordinated care. A common understanding of coordinated care is often assumed when, in reality, the concept is neither clearly defined nor completely understood. ...
متن کاملEmbryo metabolism: what does it really mean?
The study of early embryo metabolism has fascinated researchers in the field for nearly a century. Herein, we give a brief account of the general features of embryo metabolism and some consideration of the research performed to reach such conclusions. It is becoming increasingly obvious that metabolism informs many fate decisions and outcomes beyond ATP generation, such as DNA methylation, Reac...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Jornal Brasileiro de Pneumologia
سال: 2015
ISSN: 1806-3713
DOI: 10.1590/s1806-37132015000000215