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Year 10 - Maths

Sampling methods

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 see why samples are used and why different selection methods exist.

Key Notes

  • Samples are used when using the whole population would be impractical/destructive.
  • There are various sampling methods.
  • A simple random sample is one of the easiest samples to collect.

Vocabulary To Learn

  • Simple random sample: A simple random sample is where every item in a population has an equal chance of being selected for the sample.

Common Mistakes To Avoid

  • Names in a hat is the simplest way to perform a simple random sample.

3 Quick Questions (With Answers)

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

Samples are used when using the whole population would be impractical/destructive. There are various sampling methods.

2. Use this key word in a maths sentence and explain it clearly. 'Simple random sample'

A simple random sample is where every item in a population has an equal chance of being selected for the sample. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Names in a hat is the simplest way to perform a simple random sample. Correction: This can be true for very small populations but becomes time consuming quickly.

More Lessons In This Unit

Browse all guides in the Year 10 Maths guide library.