The accepted value is 1.43. Which correctly describes this student's experimental data?

TrialMeasurement11.2921.9330.88

Question 17 options:

accurate but not precise

precise but not accurate

both accurate and precise

neither accurate nor precise

Answer: neither accurate nor precise

Explanation:

Accuracy is defined as how close the measured value is to a standard value. For example if the given volume of water is 20 ml and the two measured values are 19 ml and 18 ml then the former measured value is more accurate than the later.

Precision is defined as how measured values are close to each other. For example, if the length of the wire of 10 m. If the first person measures the length of the same wire thrice and got values 9.7, 9.8 and 9.75 m whereas the second person got values 9.5, 9.6 and 9.8. In such a case the first person's measured value is more precise.

Thus as the accepted value is 1.43 and measured values are 1.29, 1.93 and 0.88, the experimental data is neither accurate nor precise.

Neither accurate nor precise

Explanation:

The values were not near or even the same as the accepted value thus making it neither accurate nor precise.