Daily Practice

Foundation

25th December 2024

5 questions · Foundation tier · 282 questions in this band

1
Collecting Data
A question asks: 'Don't you agree that the new bus timetable is an improvement?' State what is wrong with this question.
2
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?
3
Combined Mean
Group A has 10 items with mean 50. Group B has 5 items with mean 80. Find the combined mean.
4
Designing Questionnaires and Surveys
A survey question offers the response options 'Never, Sometimes, Always'. State one improvement that could be made.
5
Experimental Design
What is meant by a control variable?

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