Jawabanmu

2014-03-01T08:13:07+07:00
Rataan(x)=25/5=5 (xi-x)^2=(1-5)^2+(2-5)^2+(5-5)^2+(8-5)^2+(9-5)^2 =4^2+3^2+0^2+3^2+4^2 =16+9+0+9+16=50 SR=1/5 x 50=10 simpangan baku=akar10
1 5 1
2014-03-01T11:33:55+07:00
rataan(x)=25/5=5 (xi-x)^2=(1-5)^2+(2-5)^2+(5-5)^2+(8-5)^2+(9-5)^2 =4^2+3^2+0^2+3^2+4^2 =16+9+0+9+16=50 SR=1/5 x 50=10 simpangan baku=akar10