Page 70 - Pra U STPM 2022 Penggal 3 - Maths (T)

Mathematics Semester 3 STPM Answers

2. (a)
250 20
Number of applicants 150 Number of workers 24 8 4 0
16
200
12

100
Net income (RM)
400 600 800 1 000 1 200 1 4001 600 1 800
50
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Exercise 1.3
1. (a)
0
5 10 15 20 25 30 35 40
Age (years) 50
(b) 200 166 40
Number of workers 150 48 92 65 31 1 2 Cumulative frequency 20
30
100
50
10
0
2468 12 12 20 3.2 40 0 x
2 4 6 8 10 12 14
Distance (km)
(b)
3. 16 15 50
Number of patients 12 8 4 12 9 6 4 5 1.5 Cumulative frequency 40

30
0
7.0 10.5
21.0 24.5
14.0 17.5
28.0 31.5
3.5
Time (minutes) 35.0 38.5 42.0 45.5 49.0 20
10
4. (a) 20 0 0.5 10.5 20.5 30.5 40.5 50.5 60.5
Number of workers 24 8 2. 120 Time (minutes)
16
12
0 4 Number of days 80
40
400 600 800 1 000 1 200 1 4001 600 1 800
Net income (RM) 0
4.5 9.5 14.5 19.5 24.5 29.5 34.5 39.5
Number of crime cases
(b) Net income (RM) Number of workers
‘Less than’
400  x  600 5 Upper boundary cumulative frequency
600  x  800 11  0.5 0
800  x  1 000 23  4.5 5
1 000  x  1 200 6  9.5 42
 14.5 129
1 200  x  1 400 18
 19.5 250
1 400  x  1 600 9
 24.5 327
1 600  x  1 800 11
 29.5 369
The two histograms drawn in (a) and (b) are the  34.5 390
same except the income classes in (b) are RM200 less  39.5 400
than the one in (a).

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Ans STPM Maths(T) T3.indd 286 28/10/2021 10:25 AM