Daily Practice

Foundation

17th October 2024

5 questions · Foundation tier · 282 questions in this band

1
Skewness by Inspection
A distribution has mean = mode = median. What does this suggest about its shape?
2
Percentiles
Which percentile is the same as the median?
3
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.
4
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.
5
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).

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