rata-rata simpangan dari data 4,8,9,64,5 simpangan rata-rata dari data 7,5,5,4,3,7,4

A) Data diurut 4, 4, 5, 6, 8, 9.
Rataan = ( 4+4+5+6+8+9 ) /6 = 36/6 = 6
Simpangan rata-rata = ( 2|4-6| + |5-6| +|6-6|+|8-6|+|9-6| ) / 6 = (4+1+0+2+3) / 6 = 10/6 = 1 2/3
B) Data diurut 3, 4, 4, 5, 5, 7, 7.
Rataan = ( 3+4+4+5+5+7+7 ) / 7 = 35/7 = 5
Simpangan rata rata = ( |3-5|+2|4-5|+2|5-5|+2|7-5| ) / 7 = (2+2+0+4) /7 = 8/7 = 1 1/7