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Edexcel IGCSE Math A Higher 6.2 Hb Measures of Spread Questions

Practise spread-comparison questions by using medians and IQRs to compare consistency, typical values and variation in context.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Higher

Exam points

  • Compare two data sets using median and interquartile range statements.
  • Use a smaller IQR or range to justify which data set is more consistent.
  • Interpret spread in context, such as waiting times or test results from tables.

Edexcel IGCSE Math A Higher 6.2 Hb Measures of Spread Questions question 1

[Maximum number: 1]

A group of 60 students each sat an algebra test and a geometry test.
Each test was marked out of 110
The cumulative frequency graph gives information about the marks gained by the 60 students in the algebra test.

Cumulative frequency

Figure for Question Edexcel IGCSE Math A Higher 6.2 Hb Measures of Spread Questions question 1 — Edexcel IGCSE Math A Higher

The interquartile range of the marks gained in the geometry test is 9
Luis says
"The students' marks are more spread out in the algebra test than in the geometry test."
(d) Is Luis correct?

Give a reason for your answer.

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