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Edexcel A-Level Mathematics AS S1.2.2 Measures of Location Mean Questions

Practise grouped-data means, medians and quartiles using totals, coded values and interpolation, then explain how changes to observations affect these measures.

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.

Edexcel A-Level Mathematics AS S1.2.2 Measures of Location Mean Questions 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 Edexcel A-Level Mathematics AS S1.2.2 Measures of Location Mean Questions 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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