IGCSE Physics / Practical and maths skills

Accuracy, precision, errors and anomalies

Edexcel International GCSE Physics (4PH1), chapter 29: Practical and maths skills, specification point M2B. Part of the full course.

Read the revision notes · IGCSE Physics past papers

Measurement results can be affected by random and systematic errors, and an anomaly can distort a mean. Knowing how to spot these issues helps you judge results and suggest improvements that make measurements more reliable.

More lessons in Practical and maths skills

• Units, prefixes and standard form
• Using equations: substitute, rearrange, evaluate
• Significant figures and rounding
• Plotting a graph and drawing a line of best fit
• Gradients, tangents and areas under graphs
• Planning an investigation: variables and fair tests