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Representations of Data

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Question 61

A variable y y\,y was measured to the nearest whole number. 40 observations are given in the table below.

yyy10–1920–2425–2829–30
Frequency148135

A histogram was drawn and the bar representing the 10–19 class has a width of 2.5 cm and a height of 2.8 cm.

a.

Find the frequency density of the 10–19 class.

[1]
b.

Find the width and height of the bar representing the 20–24 class.

[3]
c.

Find the width and height of the bar representing the 25–28 class.

[3]
Markscheme

Representations of Data Questions

  1. A Level
  2. /Maths
  3. /Representations of Data

160 exam-style questions on Edexcel A Level Maths Representations of Data, covering 3.1 Outliers, 3.2 Box Plots, 3.3 Cumulative Frequency, 3.4 Histograms, and 3.5 Comparing Data. Each one has a worked solution and a mark scheme showing where the marks go.

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