Question

1. explain the difference between accuracy and precision.

Explanation:

Accuracy refers to how close a measurement is to the true or accepted value. Precision is about how close repeated measurements are to each other. A set of measurements can be precise but not accurate (e.g., a faulty scale giving consistent but wrong values), accurate but not precise (e.g., scattered measurements around the true value), both accurate and precise (e.g., good - quality instrument with correct calibration), or neither.

Answer:

Accuracy is closeness to true value; precision is closeness of repeated measurements to each other.