Question

A metal rod with a length of 4.66 cm was measured using four different devices. Which of the following measurements is the most accurate?

4.658 cm
4.635 cm
4.610 cm
4.560 cm

Answer 1

4.658. Accuracy refers to how close the experimental value is to the actual value. Precision is how close a set of data is to one another.

Answer 2

4.658 cm

Step-by-step 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.

Similarly, 4.658 cm is closest to the given length of 4.66 cm.

4.66 - 4.658 = 0.002

4.66 - 4.635 = 0.025

4.66 - 4.610 = 0.05

4.66 - 4.560 = 0.1