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Understanding error intervals and limits of accuracy

Number • Measures and accuracy

Key concepts

What you'll likely be quizzed about

  • Error intervals represent the range in which a measurement may vary due to potential inaccuracies.
  • When a value is measured, it often does not reflect the absolute truth but falls within a range.
  • For example, if a person's height is measured as 175 cm with an error margin of ±2 cm, the error interval is 173 cm to 177 cm.
  • This range indicates where the true height is likely to be, providing context for data reliability.

Flashcards

Test your knowledge with interactive flashcards

Give an example of an error interval.

Click to reveal answer

If a measurement is 50 units ±3 units, the error interval is 47 to 53 units.

Key notes

Important points to keep in mind

Always define error margins clearly.

Use appropriate instruments for measurements.

Understand the context of data when analyzing.

Error intervals provide reliability insights.

Always document the measurement process.

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