edad=8+9+10+9+8+8+10+9+8+9
edad
## [1] 88
edad2=c(8,9,10,9,8,8,10,9,8,9)
sum(edad2)
## [1] 88
examen2a=90.2+76.9+50.1+100+92.4+45.2+85.4+89.6+72.5+88.7
examen2a
## [1] 791
examen2a/10
## [1] 79.1
examen2b=c(90.2,76.9,50.1,100,92.4,45.2,85.4,89.6,72.5,88.7)
examen2b
## [1] 90.2 76.9 50.1 100.0 92.4 45.2 85.4 89.6 72.5 88.7
mean(examen2b)
## [1] 79.1