Daily Practice

Foundation

6th September 2026

5 questions · Foundation tier · 282 questions in this band

1
Estimated Mean from Grouped Data
Find the midpoint of the class interval 10-20.
2
Sampling Methods
State one advantage of random sampling.
3
Collecting Data
A question asks: 'Don't you agree that the new bus timetable is an improvement?' State what is wrong with this question.
4
Comparing Data Sets
Shop A's daily sales have an IQR of 40 pounds and Shop B's have an IQR of 15 pounds. Which shop has more variable daily sales?
5
Combined Mean
Group A has 10 items with mean 50. Group B has 5 items with mean 80. Find the combined mean.

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