Daily Practice

Foundation

18th October 2024

5 questions · Foundation tier · 282 questions in this band

1
Estimating from Samples (Foundation)
A garden centre sampled 45 out of 3000 trees and found 40 had survived the winter. Estimate how many of the 3000 trees survived the winter.
2
Spreadsheets and ICT (Foundation)
A spreadsheet shows the formula =SUM(F1:F5)/COUNT(F1:F5) in cell F6. What statistical measure does this formula calculate?
3
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.
4
Pilot Surveys (Foundation)
State one change a researcher might make to a questionnaire as a result of a pilot survey.
5
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?

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