" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
nilai..: 2, 3, 4, 5, 6, 7, 8, 9 ,10
f ..... :.2, 3, 4, 5, x, 7, 6, 5, 3 = ∑f= 35+x
f x n :4, 9,16, 25, 6x, 49, 48, 45,30= ∑fn = 226+6x
∑fn / ∑f = 6,4
226 + 6x / 35+ x = 6,4
226+ 6x = 6,4(35+ x)
226 + 6x = 224 + 6,4 x
6x - 6,4 x = 224 - 226
-0,4 x = - 2
x = 5
banyak siswa yang mempunyai nilai kurang dari 8 adalah:(nili2,3,4,5,6,dan7) adlah = 2+3+4+5+5+7 = 26