Daily Practice

Foundation

17th December 2025

5 questions · Foundation tier · 282 questions in this band

1
Sampling Methods
A school of 600 students wants a sample of 30. A teacher decides to only survey students in her own class of 30. State one problem with this method.
2
Collecting Data
Give one disadvantage of an observation study.
3
Comparing Data Sets
Team 1 has median height 165 cm and Team 2 has median height 172 cm. Write one comparison in context.
4
Combined Mean
Group A has 6 items with mean 15. Group B has 9 items with mean 25. Find the combined mean.
5
Designing Questionnaires and Surveys
Rewrite the response options '0-5, 5-10, 10-15' so that they no longer overlap.

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