In an experiment, evaluate the validity of the steps leading up to the conclusion for it to be valid. Random and systematic errors can contribute to the uncertainty of a measurement.

This article discusses simple processes for addressing the random and systematic errors caused by the dead time in a gammaray spectrometer.

Designing a less perfect solution We used FlashyScience to teach students how to use micrometer screws and for the main investigation we used the University of Colorado Boulder’s PhET simulations and ...

Introduction Wearable sensor systems may be useful for measuring head-impact exposure. Here, we tested the validity of in-ear sensors developed to improve head coupling. Methods First, the sensor was ...

However, the gap between the calculated and measured warming is not due to systematic errors of the models, as the skeptics had suspected, but because there are always random fluctuations in Earth ...

The stratified random sample is always at least as accurate on the average as the random sample and its relative efficiency is a monotone increasing function of the size of the sample. No general ...

Introduction Wearable sensor systems may be useful for measuring head-impact exposure. Here, we tested the validity of in-ear sensors developed to improve head coupling. Methods First, the sensor was ...