In R, how is a matrix initialized with values 1 to 9 arranged in three rows?
A. matrix(1:9, nrow = 3, ncol = 3)
B. matrix(c(1, 2, 3, 4, 5, 6, 7, 8, 9), 3, 3)
C. matrix(1:9, rows = 3, cols = 3)
D. mat(1:9, 3, 3)
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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