Daily Practice

Higher

5th October 2025

5 questions · Higher tier · 360 questions in this band

1
Estimated Mean from Grouped Data
Find the midpoint of the class interval 30-50.
2
Sampling Methods
State one disadvantage of quota sampling.
3
Collecting Data
State one advantage secondary data has over primary data for a project on rainfall over the last 50 years.
4
Comparing Data Sets
Team 1 has median height 165 cm and Team 2 has median height 172 cm. Write one comparison in context.
5
Combined Mean
Group A has 4 items with mean 12. Group B has 4 items with mean 20. Find the combined mean.

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