But back to the uncertainty, here are some options: Record your measurements to the appropriate significant figures. Use the sig-fig rules to determine the uncertainty in the calculation.

Thus, the goal of significant figures is to somehow give an estimate of the uncertainty in a calculation. Really, there is a better way to do this but all ways are just an approximation.

Students distinguish between accuracy and precision of measurements.

Measurement uncertainty represents a fundamental parameter in analytical chemistry, encapsulating the range within which the true value of a measurement is expected to lie.