Question

which set of data is best described as accurate and precise when compared to an accepted value of 125?
○ 130, 125, 109, 210
○ 122, 126, 121, 123
○ 125, 100, 109, 200
○ 190, 190, 191, 192

Explanation:

To determine accuracy (closeness to 125) and precision (consistency among values):

1. Analyze the first set (130, 125, 109, 210): Values are inconsistent (210 is far), so not precise.
2. Analyze the second set (122, 126, 121, 123): Values are close to 125 (differ by 1 - 4) and consistent (small range), so accurate and precise.
3. Analyze the third set (125, 100, 109, 200): Values are inconsistent (100, 200 are far), so not precise.
4. Analyze the fourth set (190, 190, 191, 192): Values are far from 125, so not accurate.

Answer:

B. 122, 126, 121, 123