Jawabanmu

2014-05-16T18:31:59+07:00
Mean = Jumlah data/banyaknya data
6,3 = 7+8+5+7+5+n+6+5+9+8/10
6,3 = 60+n/10
6,3 x 10 = 63 + n
63 = 60 + n
n = 63-60
n = 3

Tolong koreksi jika ada kesalahan.
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2014-05-16T18:37:27+07:00
Mean dari 7,8,5,7,5,n,6,5,9,8 = 6,3
mean = j. nilai / 10
mean = (3x5) +( 6x1)+ (7x2) + (8x2)+(9x1)+n/10=6,3
mean = 15+6+14+16+9+n/ 10 =6,3
mean= 60+n=6,3x10
mean=60+n=63
mean= n=63-60=3
jadi, n =3
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