‘Accuracy’ is defined as:

1. The measure of consistency or the reproductivity of the measurements
2. Closeness with which an instrument reading approaches the true value of the quantity being measured
3. The smallest measurable input change
4. The smallest measurable input change the ratio of the change in output signal of an instrument to the change in the input

‘Accuracy’ is defined as closeness with which an instrument reading approaches the true value of the quantity being measured.