Daily Practice

Foundation

25th August 2026

5 questions · Foundation tier · 282 questions in this band

1
Percentiles
Which percentile is the same as the median?
2
Crude Rate and Rates of Change
Explain why a crude rate is more useful than a raw total, such as the total number of deaths, when comparing two towns of different sizes.
3
Spearman's Rank Interpretation
The Spearman's rank correlation coefficient between the age of a used car and its price is rs = -0.88. Describe the correlation.
4
Conditional Probability (Foundation)
In a survey of 40 students, 25 like Maths. Of those 25, 18 also like Science. Find P(likes Science given likes Maths).
5
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.

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