Question 3 — IGCSE 0580 Oct/Nov 2024 Paper 41
Cambridge IGCSE Mathematics 0580, Extended tier, calculator. Topic: Statistics · Grouped data. Worth 8 marks.
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Question text
3 (a) The table shows the waiting times for 120 patients at a medical centre.
Waiting time
0 1 t G 10 10 1 t G 20 20 1 t G 40 40 1 t G 50 50 1 t G 80
(t minutes)
Frequency 2 46 33 26 13
Calculate an estimate of the mean waiting time.
.......................................... min [4]
(b) The histogram shows some information about the waiting times at a different medical centre.
2
1.5
Frequency
density 1
0.5
0
t
0 10 20 30 40 50 60 70 80
Waiting time (minutes)
The total number of patients is 90 and no patient waits for more than 80 minutes.
Complete the histogram for the patients that have a waiting time between 10 and 30 minutes.
[4]
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