Kak tolong jawab pake cara nya

1. mean = (6 + 4 + 5 + 6 + 3 + 8 + 7)/7 = 5, 57
    median = 6
    modus = 6
2. mean = (9 + 4 + 8 + 6 + 9 + 5 +7 + 3)/8 = 6, 375
    median = 6.5
    modus = 9
3. mean = (12 + 42 + 56 + 90 +50)/30 = 8.3
    median = 8.9
    modus = 9