SOAL NO 9 UTS DATMIN

nilai <- c(70, 75, 80, 85, 85, 90, 95, 100,
           60, 77, 85, 90, 98, 68, 92, 85,
           66, 75, 80, 72, 84, 50, 69, 76,
           80, 90, 95, 88, 77, 75)

mean(nilai)       # rata-rata

## [1] 80.4

median(nilai)     # median

## [1] 80

sd(nilai)         # standar deviasi

## [1] 11.48792