Five different students take the following measurements of the same object: 1.3m, 1.5m, 1.45m, 1.453m, and 1.47m. Why are the measuremetns different? Which measuremetn is correct?

Question

This is from Advanced Chemistry 10th grade

Answer 1

The 1.3 m measurement may have used the wrong scale.

the next 3 could be considered the same, just to differing degrees of accuracy which would depend on the tool used to measure. If the numbers are rounded, the next 3 are the same. 1.453 rounds to 1.45. 1.45 rounds to 1.5

1.47 could also be a misread.

The "correct" measurement depends on what accuracy is required.

An average also has to be to the requested accuracy. How many decimal places???