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Representations of Data

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Question 8

100 students completed a puzzle, their times are summarised by summary data and the box plot.

∑x=405∑x2=1984 \sum x = 405 \quad \sum x^2 = 1984 ∑x=405∑x2=1984
a.

Write down the range of the times.

[1]
b.

Write down the interquartile range of the times.

[1]
c.

Calculate the mean and the standard deviation of the times.

[3]
d.

State, giving a reason, whether you would recommend using the mean and standard deviation or the median and interquartile range to describe these data.

[2]

Representations of Data Questions

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

Practise Edexcel A Level Maths Representations of Data with exam-style questions for A Level Maths. 10 questions covering 3.1 Outliers, 3.2 Box Plots, 3.3 Cumulative Frequency, 3.4 Histograms, and 3.5 Comparing Data, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank

Data Collection
Measures of Location and Spread
Representations of Data
Correlation
Probability
Statistical Distributions
Hypothesis Testing