Page 13 - Matematik Tg2_Praktis Topikal A+_Pan Asia Publications

(i) Cari kelas mod bagi set data di atas.
Find the modal class for the above set of data.
(ii) Lengkapkan jadual dengan mengisi lajur titik tengah dan kekerapan × titik tengah.
Hitung min bagi set data di atas.
Complete the table by filling up the columns of midpoint and frequency × midpoint.
Calculate the mean for the above set of data.
[4 markah/4 marks]
Jawapan/Answer:
(i) Kelas mod/Modal class = 1 – 3
©PAN ASIA PUBLICATIONS
8 + 10 + 8 + 11
(ii) Min/Mean =
8
= 4.63 km
31. (a) Jadual 5 menunjukkan bilangan buku bagi empat subjek yang tersimpan dalam sebuah
almari.
Table 5 shows the number of books for four subjects kept in a cupboard.
Subjek/Subject Bilangan buku/Number of books
Sains/Science 8
Matematik/Mathematics 6
Sejarah/History 9
Geografi/Geography 7
Jadual 5/ Table 5
Sebuah buku dipilih secara rawak dari almari itu.
A book is selected at random from the cupboard.
(i) Hitung kebarangkalian bahawa buku yang diperoleh adalah buku Sains.
Calculate the probability of obtaining a Science book.
(ii) Hitung kebarangkalian bahawa buku yang diperoleh bukan buku Sains.
Calculate the probability of obtaining a non-Science book.
[4 markah/4 marks]
Jawapan/Answer:
(i) Kebarangkalian = Bilangan buku Sains = 8 = 4
Jumlah buku 30 15
Probability = Number of Science books = 8 = 4
Total books 30 15
(ii) Kebarangkalian = 1 – P(Buku Sains)
4
= 1 – 15
11
=
15
Probability = 1 – P(Science books)
4
= 1 – 15
11
=
15

181