Which term describes the closeness of repeated measurements to each other?

• A. Precision
• B. Accuracy
• C. Precision
• D. Solubility

Answer: (C)

Precision is the term that describes how close repeated measurements are to each other. When you measure the same quantity several times and the results cluster tightly, you have high precision, showing good repeatability under the same conditions. This is about consistency of the measurements themselves, not how close they are to the true value. Accuracy would mean the average of your measurements is close to the true value. You can be precise but not accurate if your results are consistently off from the true value, or accurate but not precise if they’re scattered around the true value. Solubility has to do with how much solute can dissolve, not with how reproducible your measurements are.