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Year 10 - Maths

Problem solving with sampling

Sampling

Unit Summary

In this unit pupils will learn how to sample, and explore accuracy and limitations with various sampling strategies and data collection techniques.

Lesson Summary

You will learn to use your understanding of sampling to solve problems.

Key Notes

  • Samples can be evaluated to determine the validity of any conclusions.
  • A suitable sample size can vary, depending on the statistical enquiry.
  • A biased sample can still be useful.

Vocabulary To Learn

  • Sample: A sample is a subset of the population.
  • Bias: Bias can be present in any sample collected from a population and may affect the results of a statistical investigation.

Common Mistakes To Avoid

  • Biased samples are always bad.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Samples can be evaluated to determine the validity of any conclusions. A suitable sample size can vary, depending on the statistical enquiry.

2. Use this key word in a maths sentence and explain it clearly. 'Sample'

A sample is a subset of the population. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Biased samples are always bad. Correction: A biased sample is sometimes useful if the sample is proportional to the population and/or it focuses on a section of the population relevant to the investigation.

More Lessons In This Unit

Browse all guides in the Year 10 Maths guide library.