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Cambridge IGCSE Statistics practice

Paper 1 structured question: Frequency distributions

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Frequency distributions

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Paper 1Statistical Techniques5 marks

A frequency distribution for the number of books read by students in a month is given below.

Data Table

Books Read by Students

Number of books read (class intervals) and frequency

Number of booksFrequency
0-25
3-58
6-812
9-1110
12-145
  1. a

    Calculate the cumulative frequency for each class interval.

    Aim for approximately 5 distinct marking points.

    [5]

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Paper 1 structured question: Frequency distributions

Paper 1Statistical Techniques5 marks

Data Table

Cumulative Frequency of Study Hours

Class intervals and cumulative frequencies

Hours studiedCumulative Frequency
0-46
5-915
10-1427
15-1935
20-2440
  1. a

    Calculate the frequency for each class interval.

    Aim for approximately 5 distinct marking points.

    [5]