1. a) Cwblhewch y tabl amlder isod:
14.8
12.2
3.4
3.7
4.0
6.7
8.3
5.3
8.7
2.4
2.2
1.9
2.1
15.0
3.4
12.3
6.5
8.9
10.2
9.8
6.2
12.3
11.0
5.5
6.6
7.1
0.6
11.5
Taldra (x)
0<x≤5
5 < x ≤ 10
10 < x ≤ 15
Tali
Amlder
9
11
8
1. b) Dangoswch y data canlynol mewn diagram amlder
Taldra (x)
Tali
Amlder
9
11
8
0<x≤5
5 < x ≤ 10
Amlder
10 < x ≤ 15
12
10
8
6
4
2
5
10
15
Taldra
2. Rhowch y data mewn tabl amlder.
55
60
61
72
89
75
50
80
99
84
66
67
59
60
61
82
83
59
62
93
20
28
34
28
67
22
77
79
55
98
Marc (m)
20 ≤ m < 40
40 ≤ m < 60
Tali
Amlder
IIII
5
IIII
5
60 ≤ m < 80
IIII IIII
10
80 ≤ m < 100
IIII III
8
1. b) Dangoswch y data canlynol mewn diagram amlder
Marc (m)
Tali
20 < m ≤ 40
40 < m ≤ 60
60 < m ≤ 80
Amlder
80 < m ≤ 100
Amlder
IIII
IIII
IIII IIII
IIII III
5
5
10
8
12
10
8
6
4
2
0
20
40
60
80
Marc
100