tolong buat besok.....................

Mean= Jumlah semua data÷banyak data
=60+70+80+90+100÷5
=400÷5
=80

Mean= (60x9)+(70x14)+(80x12)+(90x10)+(100x5)
= 540 + 980 + 960 + 900 + 500
= 3.880:(9+14+12+10+5)
= 3.880:50
= 77,6
Modus = 70
Median= 60,60,60,60,60,60,60,60,60,70,70,70,70,70,70,70,70,70,70,70,70,70,70,80,80,80,80,80,80,80,80,80,80,80,80,90,90,90,90,90,90,90,90,90,90,100,100,100,100,100
=80