1-4

Question 1

create a vector

Answer 1

c(…) c for concatenate

Question 2

what is the tast of a function

Answer 2

?c without ()

Question 3

What if vectors have different length?

Answer 3

‘recycles’ the shorter vector until it is the same length as the longer vector.

Question 4

Get previous code

Answer 4

hitting the up arrow

Question 5

List all the files in your working directory

Answer 5

list.files() or dir().

Question 6

What arguments takes a function?

Answer 6

args(func_name)

Question 7

Create a sequence of numbers, 1 to 20. Two ways

Answer 7

1:20

seq(0,10)

Question 8

Sequence 0.5er Schritte 1 bis 20

Answer 8

seq(1,20, by=0.5)

Question 9

sequence of 30 numbers between 5 and 10

Answer 9

seq(5, 10, length=30)

Question 10

get a sequence as long as the function_name one

Answer 10

seq_along(function_name)

Question 11

vector that contains 40 zeros

Answer 11

rep(0, times = 40)

Question 12

vector to contain 10 zeros, then 10 ones, then 10 twos

Answer 12

rep(c(0, 1, 2), each = 10) rep for replicate