Control Structures in R Programming MCQ question and answer with solution | R Programming MCQs

A. Export data

B. Import data

C. Use data

D. Work on data

A. two

B. three

C. four

D. five

A.

for(i in 1:100) {
             if(i <= 20) {
                next
      }
}

B.

for(i in 1:100) {
           if(i <= 19) {
           next
       }
}

C.

for(i in 1:100) {
         if(i <= 21) {
         next
      }
}

D.

for(i in 1:10) {
         if(i <= 24) {
         next
      }
}

A. Matrix object

B. Matrix data object

C. Matrix vector

D. Vector

A. unclass (as.time ("2018-12-28"))

B. unclass (as.dat ("2018-12-28"))

C. unclass (as.D (2018-12-28))

D. unclass (as.Date ("2018-12-28"))

A. for will execute a loop a fixed number of times

B. break will execute a loop while a condition is true

C. if and else tests a condition and acting on it

D. break is used to break the execution of a loop

A. A formal argument can be a symbol, a statement of the form 'symbol = expression', or the special formal argument

B. The first component of the function declaration is the keyword function

C. The value returned by the call to function is not a function

D. Functions are also often written when code must be shared with others or the public

A. Blocks are evaluated until a new line is entered after the closing brace

B. Single statements are evaluated when a new line is typed at the start of the syntactically complete statement

C. The if/else statement conditionally evaluates two statements

D. Break will execute a loop while a condition is true

A. rbind()

B. bbind()

C. jbind()

D. hbind()

A. Lapply

B. Sapply

C. Vapply

D. Zapply