Developing a method is an important part of planning an investigation. In an experiment, evaluate the validity of the steps leading up to the conclusion for it to be valid. Random and systematic ...

Oscar Pérez-Priego, Ana López-Ballesteros, Enrique P. Sánchez-Cañete, Penélope Serrano-Ortiz, Lars Kutzbach, Francisco Domingo, Werner Eugster, Andrew S ...

Figure 1 shows that individual measurement values hover around a mean value and the difference between the mean value and true value is the systematic error of ...

This paper examines the effects of systematic and random errors in recall and of selection bias in case–control studies of mobile phone use and cancer. These sensitivity analyses are based on ...

The rate of global warming in the 21st century has been significantly slower than all the models had predicted. Evidently, this was merely due to random variations. Sceptics who still doubt ...

Skeptics who still doubt anthropogenic climate change have now been stripped of one of their last-ditch arguments: It is true that there has been a warming hiatus and that the surface of Earth has ...