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Edexcel IAL Mathematics S1.2.2 measures of location: mean, median and quartiles

Practise measures of location by finding means, medians and quartiles from raw or grouped data, then interpreting changes in context.

Syllabus
First assessment 2019
Course
Mathematics YMA01
Level
AS

Exam points

  • Use totals, group sizes or coded data to find unknown means and combined means.
  • Estimate medians and quartiles from grouped data by interpolation within a class interval.
  • Explain how adding values or transforming data changes the mean, median or quartiles.

S1.2.2 - Measures of location – mean, question 1

[Maximum number: 3]

The histogram shows the times taken, in seconds, by each of 260 people to complete a puzzle.

Figure for Question S1.2.2 - Measures of location – mean, question 1 — Edexcel A-Level Mathematics AS

Question (a)

(a)

find an estimate for

[ 1 ]

Question (i)

(i)

the mean time taken to complete the puzzle,

[ 1 ]

Question (b)

(b)

Use linear interpolation to estimate the median time taken to complete the puzzle.

[ 2 ]
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