no 6 - 10 ya kaakaakkk....

6.12×4=48. rata rata=4+2+3+1+2=12.
13×2=26. =48+26+42+15+34=165
14×3=42. =165:12=13.75
15×1=15
17×2=34

7.12+8+8+4+6+10+8=56
rata rata=56:7=8

8.15,14,16,1 5,18,1817,26,16,15
median=14,15,15,15,16,16,17,18,18,26
=16+16=32:2=16

9.

ralat buat no.10
18 -10 =8