CAIE IGCSE Mathematics Extended E9.6.2 Quantiles from Cumulative Frequency

Practise estimating medians, quartiles, percentiles and interquartile ranges from cumulative-frequency diagrams.

Syllabus
2028–2030
Objective
E9.6.2
Level
Extended

Exam points

  • convert the required percentile into its cumulative-frequency position
  • read the corresponding data value from the smooth cumulative-frequency curve
  • subtract lower quartile from upper quartile to estimate the interquartile range

E9.6.2 Estimate and interpret the median, percentiles, quartiles and question 1

[Maximum number: 1]

200 students estimate the volume, V m3V \mathrm{~m}^{3}, of a classroom. The cumulative frequency diagram shows their results.

Figure for Question E9.6.2 Estimate and interpret the median, percentiles, quartiles and question 1 — CAIE IGCSE Mathematics Extended

Use the graph to find an estimate of

the 60th percentile,

___ m^3

All question bank results loaded