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2. 2.
Accommodation Around 5. Number of Text Blood Groups of Donors
Historical City of Melaka Messages Sent
350 10
300
Price (RM) 250 8 6
200
150
100
50 3 4 5 6 7 8 9 10 11 Number of donors 4
0 The dot plot is suitable for
Hotel Homestay Budget hotel Hostel displaying the number of text 2
messages sent by a group of
B
AB
Type of accommodation students. 0 A Blood Group O
6. Ages of Magazine Readers
Normal Holiday The bar chart is suitable as the
rate season Stem Leaf data of the blood groups of
The dual bar chart is suitable 2 2 5 donors is a categorical data.
for comparing different types of 3 4 0 1 1 2 3 4 6 8 9 Self Practice 12.1d
2 4 4 7 7
accommodation with the normal 5 1 1 3 7 8 8 1. (a) 8 m
and holiday season rates. 6 0 5 (b) 7.5 m
3. Key: 2 | 2 means 22 years old (c) Year 2013
Children’s Favourite Songs (d) The tree has a nearly
Dayung The stem-and-leaf plot is uniform growth rate from
Lompat Sampan suitable for displaying the age 2010 to 2015 or there is
Si Katak of each reader of the magazine no increase in height from
Lompat 15° in the survey. 2015 to 2016.
Geylang 30° Rasa (e) 16 m
Si Paku 45° Sayang
Geylang Self Practice 12.1c 2. (a) 30
60° 120°
Bangau (b) Largest diameter = 28.6 mm
Oh Bangau Ikan 1. Average Monthly Smallest diameter = 24.5 mm
Kekek Rainfall of Impian City (c) 20%
The pie chart is suitable for 400 (d) The distribution of the
comparing the favourite songs diameters of the axles is
Average rainfall (mm) 200
of a group of children. quite symmetric since most
4. Kamil’s Height 300 of the diameters range from
26.0 mm to 26.9 mm.
170 100 3. (a) 120
(b) 12

(c) Number of tested samples
Height (cm) 160 0 July with the mass of 241 g to
260 g
150
= 28 + 32 + 24 + 12
140 August September October November December = 96
Percentage of tested samples
Month with the mass of 241 g to
130 260 g
2011 2012 2013 2014 2015 2016 The line graph is suitable for = 96 × 100%
Year displaying the changes in the 120
= 80%
average monthly rainfall of
The line graph is suitable Impian City over a six-month Thus, this batch of biscuits
for displaying the changes in period. produced satisfies the
Kamil’s height over a period of required specifications.
6 years.

322
Answers

14 Ans Math F1.indd 322 11/10/16 12:23 PM