Mathematics (Syllabus D) · Oct / Nov 2017 · Paper 21 · Question 2
4024
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Sunil recorded the lengths, in minutes, of the 150 phone calls he made one month. His results are summarised in the table. Length of call (t minutes) 0 1 t G 5 5 1 t G 10 10 1 t G 20 20 1 t G 30 30 1 t G 50 Frequency 35 42 30 28 15
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2(a)[3]
2(b)[3]
2(c)[2]
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