Basics of R Programming-I

R language is a dialect of which of the following languages?

• S

• C

• MATLAB

• SAS

R files has an extension ______

• .S

• .Rp

• .R

• .C

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

• lib()

• fun.lib()

• libr()

• library()

________is used for comments

• %

• #

• -

• \\

To execute the line of source code ins script editor where the cursor currently resides you press the________

• Ctrl +T

• Ctrl + enter

• Ctrl +R

• Ctrl + Shift + enter

R is an__________programming language?

• Closed source

• GPL

• Open source

• Definite source

Who created R?

• Dennis Ritchie

• John Chambers

• jarne Stroustrup

• Ross Ihaka

Which of the following finds the maximum value in the vector x

• rm(x)

• all(x)

• max(x)

• maximum(x)

________ generate random Normal variates with a given mean and standard deviation.

• dnorm

• rnorm

• pnorm

• rpois

Which of the following is true about R?

• R is a well-developed, simple and effective programming language

• R provides a large, coherent and integrated collection of tools for data analysis.

• R has an effective data handling and storage facility

• All of the above