Introduction: Error

Introduction to Error Analysis

The knowledge we have of the physical world is obtained by doing experiments and making measurements. It is important to understand how to express such data and how to analyze and draw meaningful conclusions from it. In doing this it is crucial to understand that all measurements of physical quantities are subject to uncertainties. It is never possible to measure anything exactly. “Error” in ex...

Introduction to Experimental Error

Introduction to Quantum Error Correction

3 Quantum Error Correction 13 3.1 Trivial Two-Qubit Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 Quantum Repetition Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3 Quantum Code for a Cyclic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.4 Three Quantum Spin-Half Particles . . . . . . . . . . . . . . . ....

INTRODUCTION TO ERROR THEORY Sante

The measurement of a physical quantity can never be made with perfect accuracy, there will always be some error or uncertainty present. For any measurement there are an infinite number of factors that can cause a value obtained experimentally to deviate from the true (theoretical) value. Most of these factors have a negligible effect on the outcome of an experiment and can usually be ignored. H...

Diagnostic error in medicine: introduction.

In 1999 the Institute of Medicine (a division of the US National Academy of Sciences) published a landmark report indicating that from 44,000 to 98,000 deaths per year could be attributed to preventable medical errors (Kohn et al. 1999). Although the majority of errors related to therapy, including medication and surgical errors, the report identified a significant number of diagnostic errors. ...