> x <- matrix(1:6, 2, 3)
> x[1, , drop = FALSE]A. [,1] [,2] [,3]
[1,] 1 3 5
B. [,1] [,2] [,3]
[1,] 2 3 5
C. [,1] [,2] [,3]
[1,] 1 2 5
D. Error
Answer: Option A
This Question Belongs to R Programming >> Data Structures In R Programming
Which data structure in R is used to store an ordered collection of elements?
A. List
B. Matrix
C. Data Frame
D. Vector
What does the matrix() function create in R?
A. A list of elements
B. A one-dimensional array
C. A two-dimensional array
D. A data frame
In R, how do you create a list named my_list with three elements: 1, "hello", and TRUE?
A. my_list <- c(1, "hello", TRUE)
B. my_list = list(1, "hello", TRUE)
C. my_list(1, "hello", TRUE)
D. list(my_list = c(1, "hello", TRUE))
What is the primary data structure used for storing tabular data in R?
A. List
B. Matrix
C. Data Frame
D. Array
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