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Here are three populations:
An opportunity sample, a systematic sample and a random sample was taken from each.
Can you match the samples to the populations?
Opportunity samples (a convenient block of 9 squares was chosen):
Systematic samples (every 11th square was chosen to give a sample size of 9):
Random samples (9 squares were chosen at random):
Sample
Age 14 to 16
ShortChallenge Level 
Here are three populations:
An opportunity sample, a systematic sample and a random sample was taken from each.
Can you match the samples to the populations?
Opportunity samples (a convenient block of 9 squares was chosen):
Systematic samples (every 11th square was chosen to give a sample size of 9):
Random samples (9 squares were chosen at random):
You can find more short problems, arranged by curriculum topic, in our short problems collection.
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