Accuracy and Precision Flashcards
Understand the difference between accuracy and precision
1
Q
Define accuracy.
A
How close an experimental value gets to the true value
2
Q
Define precision.
A
How close a series of measurements are to each other, regardless of accuracy.
3
Q
Accurate, Precise, Neither, or Both?:
.90 mL, .91 mL (Actual: .80 mL)
A
Precise
4
Q
Accurate, Precise, Neither, or Both?:
100. kg, 95.2 kg (Actual: 95.21 kg)
A
95.2 is accurate, but the values are not precise
5
Q
Accurate, Precise, Neither, or Both?:
1.95 mol, 1.96 mol (Actual: 1.93 mol)
A
Both
6
Q
Accurate, Precise, Neither, or Both?:
22.3 cm, 22.2 mm (Actual: 22.3 dm)
A
Neither
7
Q
Accurate, Precise, Neither, or Both?:
4.00 g, 4.10 g, 3.95 g (4.05 g)
A
Neither
8
Q
Accurate, Precise, Neither, or Both?:
6572 J, 6574 J (Actual: 6575 J)
A
Both- based on the precision scale of the measurement
