Cambridge IGCSE Mathematics practice

exam practice - 1 Compute the mean, median, mode, quartiles, range, and interquartile range for individual datasets and explain the different uses of each measure. 2 Estimate the mean for both grouped discrete and grouped continuous data. 3 Determine the modal class from a grouped frequency distribution. - Averages and measures of spread

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Paper

Marks

Topic

Averages and measures of spread

Exam-style question

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Paper 2Core or Extended Mathematics5 marks

A grouped frequency table shows the distribution of test scores.

Data Table

The table shows test scores grouped into intervals.

a
Determine the modal class of the distribution.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Calculate an estimate of the mean score using the midpoints of the intervals.
Your answer
Aim for approximately 4 distinct marking points.
[4]

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Maths method check

Topic focus: Averages and measures of spread.
Question style: structured_mathematics.
Reasoning demand: reasoning.
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Paper 2Core or Extended Mathematics4 marks

Description

Analyze the given dataset to find various statistical measures.

a
Calculate the mean of the dataset.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Calculate the median of the dataset.
Your answer
Aim for approximately 2 distinct marking points.
[2]