Question

which set of data is best described as accurate and precise when compared to an accepted value of 125?
○ 120, 125, 109, 210
○ 122, 126, 121, 123
○ 125, 100, 109, 200
○ 190, 190, 191, 192

Explanation:

To determine accurate and precise data:

• Accuracy: Data values close to the accepted value (125).
• Precision: Data values close to each other (low variability).

1. Analyze each option:

• Option 1 (120, 125, 109, 210): Values are spread out (e.g., 210 is far from 125), so not precise.
• Option 2 (122, 126, 121, 123): All values are close to 125 (accuracy) and close to each other (precision, small range).
• Option 3 (125, 100, 109, 200): Values like 100, 200 are far from 125 (inaccurate) and spread out (imprecise).
• Option 4 (190, 190, 191, 192): Values are close to each other (precise) but far from 125 (inaccurate).

Answer:

B. 122, 126, 121, 123 (Note: Assuming the second option is labeled B; adjust identifier if needed based on original question’s numbering.)