Statistika
4 bilangan :
30, a, a + 10, 60
rata-rata 4.bilangan = 45
(30 + a + a + 10 + 60)/4 = 45
100 + 2a = 45 × 4
2a = 180 - 100
a = 80/2
a = 40
30, 40, 50, 60
Median, Me = nilai tengah
Me = (40 + 50)/2
Me = 45
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Statistika
4 bilangan :
30, a, a + 10, 60
rata-rata 4.bilangan = 45
(30 + a + a + 10 + 60)/4 = 45
100 + 2a = 45 × 4
2a = 180 - 100
a = 80/2
a = 40
4 bilangan :
30, 40, 50, 60
Median, Me = nilai tengah
Me = (40 + 50)/2
Me = 45