Question

1. explain the difference between accuracy and precision.

Explanation:

• Accuracy: Refers to how close a measured or calculated value is to the true (accepted) value. For example, if the actual weight of an object is 10 kg, and a scale measures it as 9.98 kg, that measurement is accurate as it's close to the true value.
• Precision: Refers to how close repeated measurements (or calculations) of the same quantity are to each other, regardless of how close they are to the true value. For example, if a scale repeatedly measures an object as 8.5 kg, 8.51 kg, 8.49 kg, these measurements are precise (they are close to one another) even if the true value is 10 kg (so they may not be accurate).

Answer:

• Accuracy: Proximity of a value to its true/accepted value.
• Precision: Proximity of repeated measurements to one another (regardless of accuracy).