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Exam-style practice

Frequency distributions answer explanations

Review worked answers and explanations for Frequency distributions. Aligned to Cambridge IGCSE Statistics.

Answer explanations

Question 1 of 12

Review the answer support, then move sideways through the set.

Paper 1 structured question: Frequency distributions

Paper 1Statistical Techniques1 marks

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.

    [1]