Daily Practice

Foundation

3rd January 2025

5 questions · Foundation tier · 282 questions in this band

1
Estimated Mean from Grouped Data
A class interval 0-10 has frequency 6. Find frequency x midpoint.
2
Sampling Methods
A gym has 900 members. A sample of 45 is needed using systematic sampling, with a random start of 12. Find the 4th person selected.
3
Collecting Data
Give one advantage of using a questionnaire to collect data.
4
Comparing Data Sets
Two classes sit the same test. Class P: mean 70, range 10. Class Q: mean 55, range 30. Write a full comparison.
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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