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