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CAIE IGCSE Mathematics Extended E9.3.1 Calculate the Mean Median Mode Quartiles Range and Interquartile Questions

Practise Extended CAIE IGCSE Mathematics by calculating and interpreting mean, median, mode, quartiles, range and interquartile range for data sets.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • Calculate mean, median, mode, quartiles, range and interquartile range for individual data.
  • Construct and interpret box-and-whisker plots and use ordered data or frequency information to find quartiles.
  • Distinguish the purposes of averages and measures of spread when describing a data set.

CAIE IGCSE Mathematics Extended E9.3.1 Calculate the Mean Median Mode Quartiles Range and Interquartile Questions question 1

[Maximum number: 4]

These are Rahul's 10 test scores.
9
8
9
10
7
x
9
9
x
7

The mean of these scores is 8.

Find the interquartile range.
You must show all your working.

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