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7,3 (16+x) = 5 + 30 + 42 + 8x + 27 +10
116,8 + 7,3x = 114 + 8x
116,8 - 114 = 8x -7,3x
2,8 = 0,7x
x = 2,8 per 0,7
x = 4
modus : 7
median : 5,6,6,6,6,6,7,7,7,7,7,7,8,8,8,8,9,9,9,10 => ada 20 digit berarti tengah2nya angka ke 10 dan 11.
jadi mediannya : angka ke 10 = 7 dan angka ke 11 = 7
7+7 per 2 = 14 per 2 7
jadi :
- x = 4
-modus = 7
-median = 7
7,3 = 5 + 30 + 42 + 8x + 27 + 10
16 + x
7,3 = 114 + 8x
16 + x
7,3 (16 + x) = 114 + 8x
116,8 + 7,3x = 114 + 8x
116,8 - 114 = 8x - 7,3x
2,8 = 0,7x
x= 4
median: Xn/2 + Xn/2 + 1
2
X20/2 + X20/2 + 1
2
X10 + X11 / 2
7 + 7 /2
7
modus: 8