The rate at which energy is supplied. Compare with accuracy . Precision is reproducibility. Don't confuse precision with accuracy . Compare with systematic error , gross error and mistake .
Random errors are errors that affect the precision of a set of measurements.
Random error scatters measurements above and below the mean, with small random errors being more likely than large ones. Compare with absolute error . The uncertainty in a measurement compared to the size of the measurement. The relative standard deviation is a measure of precision , calculated by dividing the standard deviation for a series of measurements by the average measurement. A convention for recording measurements.