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Representations of Data

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Question 74

The partially completed histogram and the partially completed table show the times taken, to the nearest second, for a group of people to complete a puzzle.

A partially completed histogram showing Frequency Density on the y-axis and Time (s) on the x-axis. The x-axis ranges from 0 to 20 with major grid lines every 2 units and minor grid lines every 1 unit. There are two shaded bars: one from 5 to 8 seconds with a height of 12, and another from 11 to 15 seconds with a height of 8. The y-axis is labeled 'Frequency Density' and has no numerical scale.

Time (seconds)Frequency
1–42
5–812
9–108
11–15
16–203
a.

Complete the table.

[1]
b.

Complete the histogram.

[2]
c.

One of the participants is selected at random.

Estimate the probability that this participant completed the puzzle in under 10 seconds.

Give your answer as an exact fraction.

[2]
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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