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IB Maths AI SL 4.3 Summary statistics Question Bank

Practise IB Mathematics SL/HL 4.3 by applying summary statistics methods to exam-style questions.

Syllabus
First assessment 2021
Course
Mathematics: applications and interpretation SL
Level
SL

Exam points

  • identify the mathematical structure, variable or representation
  • select and apply the correct theorem, formula or algorithm
  • check the result using units, domain, graph or logical reasoning

SL 4.3—Summary statistics question 1

[Maximum number: 5]

Elsie, a librarian, wants to investigate the length of time, T minutes, that people spent in her library on a particular day.

Question (a)

(a)

Write down the modal class.

[ 1 ]

Question (b)

(b)

Write down the mid-interval value for this class.

[ 2 ]

Question (c)

(c)

Use Elsie's data to calculate an estimate of the mean time that people spent in the library.

[ 2 ]
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