EVERYDAY SCIENCE

Detailed explanation-1: -For a normal distribution the measure of imprecision is the standard deviation (SD). Alternatively one can use the variance, which is simply the square of the SD.

Detailed explanation-2: -The uncertainty associated with a test result due to the random errors is termed imprecision, which is determined from the data of internal quality control. The total analytical error also has to include an estimate of analytical bias.

Detailed explanation-3: -Observational error (or measurement error) is the difference between a measured value of a quantity and its true value. In statistics, an error is not necessarily a “mistake". Variability is an inherent part of the results of measurements and of the measurement process.

Detailed explanation-4: -In scientific research, measurement error is the difference between an observed value and the true value of something. It’s also called observation error or experimental error.