Question 12 — IGCSE 0580 May/June 2025 Paper 21
Cambridge IGCSE Mathematics 0580, Extended tier, non-calculator. Topic: Statistics · Cumulative frequency. Worth 4 marks.
Open in interactive question bank →
Question text
12 The time spent on the internet by each of 120 adults is recorded for one day.
The cumulative frequency diagram shows this information.
120
100
80
Cumulative
60
frequency
40
20
0
0 2 4 6 8 10
Time (hours)
(a) Use the cumulative frequency diagram to find an estimate of the interquartile range.
.............................................. h [2]
(b) 70% of the adults spent less than k hours on the internet.
Use the cumulative frequency diagram to find an estimate of the value of k.
k = ................................................ [2]
(cid:300)(cid:219)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:223)(cid:251)(cid:181)(cid:256)(cid:215) [Turn over
© UCLES 2025 (cid:300)(cid:230)(cid:269)(cid:243)(cid:212)(cid:295)(cid:244)(cid:239)(cid:223)(cid:266)(cid:266)(cid:244)(cid:175)(cid:229)(cid:257)(cid:265)(cid:251)(cid:258) 0580/21/M/J/25
(cid:293)(cid:197)(cid:197)(cid:213)(cid:245)(cid:181)(cid:197)(cid:277)(cid:213)(cid:229)(cid:277)(cid:197)(cid:261)(cid:245)(cid:261)(cid:213)(cid:277)(cid:213)
M
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
NIGRAM
SIHT
NI
ETIRW
TON
OD
* 0000800000010 *
10
(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:2)(cid:1)(cid:44)
NIGRAM
DFD
Mark scheme
