Daily Practice

Higher

4th July 2024

5 questions · Higher tier · 360 questions in this band

1
Box Plots from Cumulative Frequency and Outliers
A data set has Q1 = 12 and Q3 = 20. Calculate the IQR and the upper outlier boundary.
2
Weighted and Geometric Mean
A company's sales grew by multipliers of 1.20, 1.50 and 1.10 over three years. Calculate the geometric mean growth multiplier, to 3 significant figures, and state the approximate average percentage growth rate per year.
3
Pilot Surveys (Higher)
State the difference between a pilot survey and the main survey.
4
Weighted and Chain Base Index Numbers
A quantity has chain-base index numbers of 110 (Year 2 based on Year 1) and 120 (Year 3 based on Year 2). Calculate the fixed-base index number for Year 3, using Year 1 as the base (= 100).
5
Recognising Misleading Graphs (Higher)
A pictogram uses house-shaped images to represent numbers of houses built, where a bigger house image represents a bigger number. Explain why scaling the image by area rather than using a repeated fixed-size symbol can mislead.

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