Final answer:
The importance of accurate and precise measurements in an experiment lies in their ability to provide reliable and valid results. Accuracy refers to how close a measurement is to the true value, while precision is about the consistency of repeated measurements. The goal is to have measurements that are both, using precise tools to aid in this pursuit.
Step-by-step explanation:
It is crucial for measurements in an experiment to be both accurate and precise because each of these terms represents distinct and essential aspects of quality measurement. Accuracy refers to how close a measurement is to the true or accepted value. For instance, if the accepted length of an object is 11.0 inches, measurements that are 11.1 inches, 11.2 inches, and 10.9 inches demonstrate a high degree of accuracy.
Precision, on the other hand, denotes how consistent repeated measurements are with each other, regardless of how close they are to the true value. A measurement system that yields 10.9 inches consistently displays high precision. It's important to note that a set of measurements can be precise without necessarily being accurate if they are consistently off from the true value.
While significant figures play a role in measurement, they are not the sole determinants of accuracy and precision. However, using the appropriate number of significant figures can contribute to the precision of a measurement by conveying the level of certainty in the measured value.
The goal of scientists is to achieve measurements that are both accurate and precise, as this increases the reliability of their results and supports sound conclusions. A precise measuring tool, such as a caliper that measures small increments, enhances the capability of achieving accuracy and precision in measurements.