logo

Cambridge IGCSE Statistics practice

Paper 1 structured question: Quartiles, percentiles and measures of dispersion

Try the question first, then check the answer and practise the same topic again.

Attempt questionQuartiles, percentiles and measures of dispersion revisionRevise the key idea

At a glance

1

Paper

4

Marks

Topic

Quartiles, percentiles and measures of dispersion

Exam-style question

Try this first

Paper 1Statistical Techniques4 marks

Estimating the interquartile range from a cumulative frequency curve.

Diagram Description

Cumulative Frequency Curve

A cumulative frequency curve is shown with data points plotted for a dataset. The curve rises from 0 to 100 cumulative frequency.

  1. a

    Calculate the interquartile range using the cumulative frequency curve.

    Aim for approximately 4 distinct marking points.

    [4]

0 of 1 part answered

Answer every part before opening the mark scheme.

Common mistake

No common mistake is linked to this question yet.

Related flashcards

Flashcard 1 of 6

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted

Paper 1 structured question: Quartiles, percentiles and measures of dispersion

Paper 1Statistical Techniques4 marks

Data Table

Grouped Frequency Distribution

A table showing class intervals and frequencies for a dataset.

Class IntervalFrequency
0-105
10-2015
20-3025
30-4020
40-5010
  1. a

    Calculate the interquartile range using the grouped frequency distribution.

    Aim for approximately 4 distinct marking points.

    [4]