Daily Practice

Foundation

28th July 2026

5 questions · Foundation tier · 282 questions in this band

1
Crude Rate and Rates of Change
A population falls from 8,000 to 7,600. Find the percentage rate of change, stating whether it is an increase or decrease.
2
Spearman's Rank Interpretation
A researcher finds rs = 0.99 between a town's number of ice cream vans and its number of sunburn cases, and concludes the vans cause sunburn. Explain why this conclusion may be wrong.
3
Conditional Probability (Foundation)
A drawer has 7 black socks and 5 white socks. Two socks are taken without replacement. Find P(second sock is black given the first sock was black).
4
Estimating from Samples (Foundation)
A survey of 30 shoppers out of 900 in a store found the mean amount spent was 18.50 pounds. What is the best estimate of the mean amount spent by all 900 shoppers?
5
Spreadsheets and ICT (Foundation)
Which spreadsheet formula would you use to find the total of the values in cells B2 to B20?

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