" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
rata2= sigma i / n
=3+4+4+4+5+7+7+8+8+8+9+10+12 / 13
= 83/ 13
=6,8
kemudian cari ragam (ragam tunggal)
Ragam= 1/n sigma (xi - rata-rata)²
=1/13 [ |3-6,8|² + 3|4-6,8|² + |5-6,8|² + 2|7-6,8|² + |9-6,8|² + 3|8-6,8|² + |10-6,8|² + |12-6,8|²
= 1/13 (14,4 + 23,52 + 3,24 + 0,08 + 4,84 + 4,32 +10,24 + 27,04)
= 1/13 (87,41)
= 6,72