Question 6 — IGCSE 0580 Oct/Nov 2025 Paper 42
Cambridge IGCSE Mathematics 0580, Extended tier, calculator. Topic: Statistics · Averages (discrete data). Worth 4 marks.
Open in interactive question bank →
Question text
6 One morning, a dentist has appointments for 10 patients.
The stem-and-leaf diagram shows the waiting time for 8 of these patients.
0 1 4
1 0 2 9
2 1 5 5
Key: 1 | 0 represents 10 minutes
The times for the two other patients, P and Q, are not shown in the stem-and-leaf diagram.
The mean waiting time of all 10 patients that morning is 16 minutes.
The range of waiting times is 26 minutes.
Patient P waits longer than patient Q.
Find the waiting time for each of patient P and patient Q.
Patient P .........................................min
Patient Q .........................................min
[4]
(cid:300)(cid:205)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:222)(cid:250)(cid:183)(cid:256)(cid:215)
© UCLES 2025 (cid:300)(cid:260)(cid:185)(cid:242)(cid:206)(cid:287)(cid:240)(cid:295)(cid:223)(cid:262)(cid:248)(cid:253)(cid:219)(cid:268)(cid:192)(cid:274)(cid:241)(cid:258) 0580/42/O/N/25
(cid:293)(cid:245)(cid:293)(cid:277)(cid:181)(cid:213)(cid:197)(cid:277)(cid:277)(cid:229)(cid:181)(cid:261)(cid:197)(cid:277)(cid:229)(cid:277)(cid:277)(cid:213)
W
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
* 0000800000005 *
5
(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:6)(cid:44)
NIGRAM
DFD
Mark scheme
