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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 Techniques1 marks

Analysis of test scores from a class of students.

Data Table

Test Scores Distribution

The following table shows the distribution of test scores for a class of 20 students.

Score RangeFrequency
0 to under 102
10 to under 203
20 to under 305
30 to under 406
40 to under 504
  1. a

    Calculate the total number of students who scored 30 or above.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 1 structured question: Frequency distributions

Paper 1Statistical Techniques2 marks

Data Table

Class A and Class B Test Scores

The following table compares the test scores of two classes.

Score RangeClass A FrequencyClass B Frequency
0 to under 1012
10 to under 2031
20 to under 3045
30 to under 4064
40 to under 5023
  1. a

    Compare the performance of Class A and Class B in the 30 to under 40 range.

    Aim for approximately 2 distinct marking points.

    [2]