Observational error is the difference between a measured value of quantity and its true value. In statistics, an error is not a "mistake". Variability is an inherent part of things being measured and of the measurement process.
Read more about Observational Error: Science and Experiments, Surveys
Famous quotes containing the word error:
“In Pride, in reas’ning Pride, our error lies;
All quit their sphere, and rush into the skies.
Pride still is aiming at the blest abodes,
Men would be Angels, Angels would be Gods.”
—Alexander Pope (1688–1744)