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CAIE A-Level Physics 1.3.1 Systematic and Random Errors

Practise distinguishing systematic and random errors, explaining their effects on readings and averages and identifying likely sources in experiments.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Distinguish systematic error, including zero error, from random error in a measurement.
  • Explain how a systematic or zero error shifts results consistently, while random error produces scatter or variation.
  • Identify the likely error source from repeated measurements or a stated instrument and explain its effect on the reported physical quantity.

1.3.1—The effects of systematic errors (including zero errors) and random errors question 1

[Maximum number: 1]

Which statement about errors in measurements is correct?

A

An accurate set of measurements always has a small random error.

B

A precise set of measurements always has a small systematic error.

C

A random error can be reduced by taking an average of several measurements.

D

A systematic error creates a random set of measurements spread out about the true value.

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