Significant Digits

Front

What is meant by 'high precision' in measurements?

Back

High precision refers to measurements that are repeatable and consistent, indicating that the values are close to each other.

Front

Which measurement is more precise: 4 mL or 4.3 mL?

Back

4.3 mL is more precise because it has more significant digits.

Front

What is the significance of the last digit in a measurement?

Back

The last digit in an accepted measurement is estimated, indicating it is not exact.

Front

In the measurement 7.1 cm, which digit is the estimated digit?

Back

1 is the estimated digit.

Front

Which measurement is more precise: 2.4 oz or 2.37 oz?

Back

2.37 oz is more precise because it has more significant digits.

Front

Define 'significant digits'.

Back

Significant digits are the digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal part.

Front

How do you determine the number of significant digits in a measurement?

Back

Count all non-zero digits, any zeros between them, and any trailing zeros in the decimal portion.

Front

What is the difference between precision and accuracy?

Back

Precision refers to the consistency of measurements, while accuracy refers to how close a measurement is to the true value.

Front

If a measurement is 0.00456 m, how many significant digits does it have?

Back

0.00456 m has three significant digits (4, 5, and 6).

Front

What does it mean if a measurement has low precision?

Back

Low precision means that the measurements vary widely and are not consistent.