What term describes closeness of two or more measurements to each other?

• A. Precision
• B. Accuracy
• C. Length
• D. Ionic Compound

Answer: (A)

Precision is the degree to which repeated measurements yield the same result. When several measurements of the same quantity come out very close to each other, they are precise, even if they aren’t hitting the exact true value. For example, weighing the same object multiple times might give 2.00 g, 2.01 g, and 2.02 g, which shows high precision because the results cluster together. Accuracy, by contrast, refers to how close those measurements are to the true value. The other options don’t describe this idea: length is just a measurement, not a measure of repeatability, and an ionic compound is a chemical substance, not a measurement concept.