Precision vs. Accuracy in Measurements Steps:

• Precision is determined by how closely repeated measurements from each equipment agree with each other; accuracy is how close the average measurement is to the true value V.
• For equipment X: Measurements are spread out (imprecise) but average near V (accurate).
• For equipment Y: Measurements cluster tightly but average away from V (precise but inaccurate).
• For equipment Z: Measurements are both spread out and average far from V (imprecise and inaccurate). Why A is correct:
• Only Y is precise (tight cluster); only X is accurate (average ≈ V), matching definitions of precision (repeatability) and accuracy (closeness to true value). Why the others are wrong:
• B: Overcounts accuracy; Z is not accurate.
• C: Overcounts precision; X and Z are imprecise.
• D: Overcounts both; only one each qualifies.

Final answer: A