Page 89 - Steady Mate Tg1 - Book B

Matematik Tingkatan 1 Bab 12 Pengendalian Data

(b) Rajah di bawah menunjukkan kumpulan darah bagi (ii) Carta palang dan carta pai sesuai digunakan
20 orang penderma dalam suatu kempen derma kerana data mengenai kumpulan darah
PT3
darah. penderma ialah data kategori.
The diagram shows the blood groups of 20 donors in a The bar chart and pie chart are suitable as the
blood donation campaign. data of the blood groups of donors is a categorical
data.
Kumpulan Darah Penderma
Blood Group of Donor
8 (c) Plot batang-dan-daun di bawah menunjukkan skor
ujian murid Tingkatan 1 Usaha.
Bilangan penderma Number of donors 4 Usaha students. Daun

The stem-and-leaf plot shows the test scores of Form 1
6
Batang
Stem
Leaf
2 5 6
6 2 5 7
7 1 1 3 4 4 6 8 8 9
0 8 3 5 7 8
A B AB O
Kumpulan darah 9 0 2 9
Blood group
Kekunci: 5 | 6 bermakna 56 markah
Key: 5 | 6 means 56 marks
(i) Pada ruang jawapan, bina carta pai untuk
mewakili maklumat pada rajah di atas. (i) Cari bilangan murid yang terlibat dalam
In the answer space, construct a pie chart to kajian ini.
represent the information in the diagram above. Find the number of students who took part in this
(ii) Berikan justifikasi tentang kesesuaian kedua- survey.
dua jenis perwakilan data itu. (ii) Nyatakan skor tertinggi yang diperoleh murid
Justify the appropriateness of these two data dalam ujian ini.
representations. State the highest score obtained in this test.
[4 markah / 4 marks] (iii) Cari peratus murid yang mendapat lebih
daripada 80 markah.
Jawapan / Answer:
(i) Find the percentage of students who obtained more
than 80 marks.
Kumpulan Darah Penderma
Blood Group of Donor (iv) Nyatakan inferens tentang taburan markah
ujian bagi murid Tingkatan 1 Usaha.
State the inference based on the distribution of
marks of Form 1 Usaha students.
O A [4 markah / 4 marks]

144° 126° Jawapan / Answer:
(i) 20 orang murid / students
54° (ii) 99 markah / marks
36°
(iii) Peratusan / Percentage
AB B 7
= × 100%
20

= 35%

(iv) Kebanyakan murid mendapat markah 71
hingga 79.
Most of the students obtained a score of 71 to 79
marks.

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