A Level physics Appendix 10 Glossary MCQ 1-10

What is the definition of validity?

• The interval within which the true value can be considered to lie with a given level of confidence.
• A measurement is valid if it measures what it is supposed to be measuring.
• The smallest measuring interval and the source of uncertainty in a single reading.
• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.

What is the true value?

• The value that would have been obtained in an ideal measurement.
• The number of significant figures used in recording the measurements.
• The difference between the measurement result and the true value.
• The precision obtained when measurement results are obtained by a single operator using a single method over a short timescale.

How is accuracy defined?

• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The interval within which the true value can be considered to lie with a given level of confidence.
• A measurement result is considered accurate if it is judged to be close to the true value.
• The smallest measuring interval and the source of uncertainty in a single reading.

What does precision denote?

• The number of significant figures used in recording the measurements.
• The closeness of agreement (consistency) between values obtained by repeated measurements.
• The difference between the measurement result and the true value.
• The value that would have been obtained in an ideal measurement.

What is repeatability?

• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The interval within which the true value can be considered to lie with a given level of confidence.
• The precision obtained when measurement results are obtained by a single operator using a single method over a short timescale.
• The smallest measuring interval and the source of uncertainty in a single reading.

What is reproducibility?

• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The precision obtained when measurement results are obtained by a single operator using a single method over a short timescale.
• The interval within which the true value can be considered to lie with a given level of confidence.
• The smallest measuring interval and the source of uncertainty in a single reading.

What is uncertainty?

• The smallest measuring interval and the source of uncertainty in a single reading.
• The interval within which the true value can be considered to lie with a given level of confidence.
• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The difference between the measurement result and the true value.

What is error?

• The smallest measuring interval and the source of uncertainty in a single reading.
• The interval within which the true value can be considered to lie with a given level of confidence.
• The difference between the measurement result and the true value.
• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.

What is resolution?

• The smallest measuring interval and the source of uncertainty in a single reading.
• The interval within which the true value can be considered to lie with a given level of confidence.
• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The difference between the measurement result and the true value.

What determines the number of significant figures (SF) used in recording measurements?

• The precision obtained when measurement results are obtained by different operators using different pieces of apparatus.
• The smallest measuring interval and the source of uncertainty in a single reading.
• The resolution of the measuring instruments and should usually be the same as given in the instrument with the fewest SF in its reading.
• The interval within which the true value can be considered to lie with a given level of confidence.