Tentukan mean, median dan modusbantuin ka
A. mean = 4 + 6 + 6 + 8 + 9 + 11 + 12 + 20 ÷ 8
= 76 ÷ 8
= 9,5
median = 8,5
modus = 6
b. mean = 10 + 11 + 14 + 18 + 18 + 20 + 21 ÷ 7
= 112 ÷ 7
= 16
median = 18
modus = 18