Accuracy and Precision

Read the "Accuracy and Precision" section. Imagine accuracy as hitting the bullseye on a dartboard every time, while precision corresponds to hitting the "triple 20" consistently. As another example, consider an analytical balance with a calibration error such that it reads 0.24 grams too high. Then, even though measuring identical mass readings of a single sample would mean excellent precision, the accuracy of the measurement would be poor.