Daily Practice

Foundation

1st February 2025

5 questions · Foundation tier · 282 questions in this band

1
Combined Mean
A class of 15 students has a mean score of 30. When combined with another class of 25 students, the combined mean of all 40 students is 40. Find the mean score of the second class.
2
Designing Questionnaires and Surveys
Explain why a pilot survey should be carried out before the full survey is sent out.
3
Experimental Design
Give one reason why participants should be assigned to groups at random.
4
Median Quartiles and IQR
Find the median of: 3, 5, 8, 10.
5
Index Numbers
A rent index shows 2019 = 100 and 2024 = 118. Find the actual rent in 2024 if the 2019 rent was 650 pounds.

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