R-second-quiz

-----function is used to concateneate vector

• cat()

• concat()

• c()

• con()

List is called

• Homogeneous

• Hetreogeneous

• hybrid

• none

Numbers in R are generally treated as _______ precision real numbers.

• real

• double

• numeric

• integer

How to install for a package and all of the other packages on which for depends?

• install()

• package.R()

• install.packages()

• R.install()

__________ function is used to watch for all available packages in library.

• fun.lib()

• library()

• lib()

• libr()

d = c(3,4,5,67,8,9) which code is used to select first four elements

• c[0:4]

• c[1:4]

• c[4:3]

• c[0:3]

f=false, is.logical(f)

• TRUE

• FALSE

• true

• false

what is the output paste("i", "am","OK")

• i am OK

• i am ok

• "i""am""ok"

• "i am ok"

x <- 5 class(x)

• integer

• numeric

• real

• imaginary

R has how many atomic class of objects

• 5

• 4

• 3

• 2