Chapter 3: Measures of Location and Spread

A-level MathematicsStatistics and Mechanics7 topicsHigher

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6 marksfindstandardEdexcel

SM03-1: class 20 < x

\leq

30 has frequency 18 and width 10. Find frequency density = 1.8 for histograms, box plots and cumulative frequency. Show the method clearly by using divide frequency by class width.

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6 marksshow thatstandardEdexcel

SM03-2 verification: show that the printed answer is valid by applying divide frequency by class width. Include a check using class 20 < x

\leq

30 has frequency 18 and width 10.

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6 marksprovehardEdexcel

SM03-3 proof: starting with class 20 < x

\leq

30 has frequency 18 and width 10, prove frequency density = 1.8 for histograms, box plots and cumulative frequency; give restrictions.

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6 markshencesynopticEdexcel

Using SM03-4's earlier result frequency density = 1.8, hence solve the linked problem in histograms, box plots and cumulative frequency and state whether the answer is exact or rounded.

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2. Data Presentation and Interpretation

4. Probability

Key learning objectives

Understand the key principles behind Measures of Location and Spread.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.