Question

Four people weigh a standard mass of 10.00 g on the same balance. Which of the following sets of readings suggest measurements that are neither precise nor accurate?

10.00 g, 10.01 g, 9.99 g, 9.98 g

10.00 g, 12.15 g, 8.03 g, 9.23 g

12.18 g, 12.16 g, 12.17 g, 12.18 g

10.0 g, 10.001 g, 9.9 g, 9.8995 g

Answer 1

someone plz help

Answer 2

The second option.

The difference between accuracy and precision can be kinda confusing to understand. Here's an example. Consider four identical dartboards (concentric circles below) and a bunch of thrown darts (the 5 Xs). "Accuracy" in this case will refer to the relative position of the thrown dart to the bulls-eye, so throwing a dart closer to the center is "more accurate" then throwing a dart into one of the outer rings.

The first board has tosses that are both accurate and precise; accurate because many of the darts hit the bulls-eye, and precise because they all land close to each other.

The second demonstrates accurate but not precise; 3 of the 5 hit the bulls-eye, but the other 2 do not.

The third is precise but not accurate; none of the darts hit the bulls-eye, but all of them land pretty close to each other.

The fourth is neither accurate nor precise; no darts hit the center, and they've been thrown all across the board.