Question

the accepted value is 1.43. which correctly describes this students experimental data?
trial | measurement
1 | 1.29
2 | 1.93
3 | 0.88

a) accurate but not precise
b) precise but not accurate
c) both accurate and precise
d) neither accurate nor precise

Explanation:

To determine accuracy and precision:

• Accuracy: How close measurements are to the accepted value (1.43). The measurements (1.29, 1.93, 0.88) are all far from 1.43, so not accurate.
• Precision: How close measurements are to each other. The differences between 1.29, 1.93, and 0.88 are large (e.g., 1.93 - 0.88 = 1.05), so not precise.

Answer:

D) neither accurate nor precise