Daily Practice

Foundation

1st June 2025

5 questions · Foundation tier · 282 questions in this band

1
Stratified Sampling (Foundation)
A factory has 400 workers: 160 in production, 120 in packing and 120 in admin. A stratified sample of 50 workers is needed. Find how many should be sampled from packing.
2
Pilot Surveys (Foundation)
State one change a researcher might make to a questionnaire as a result of a pilot survey.
3
Recognising Misleading Graphs (Foundation)
A bar chart's vertical axis runs from 0 to 10 in equal steps of 2. Is this axis likely to be misleading?
4
Mean Median Mode and Range
A set of 7 numbers has a mean of 12. Find the total of all 7 numbers.
5
The Statistical Enquiry Cycle
State two things that should be decided during the planning stage of the enquiry cycle.

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