1. What is a data frame in R? a) A special type of list b) A matrix with named rows and columns c) A table-like structure with rows and columns of equal length d) A collection of vectors of different types Click to View Answer and Explanation Answer: c) A table-like structure with rows and […]
1. What is an array in R? a) A data structure for storing tabular data b) A 1-dimensional list of elements c) A multi-dimensional data structure d) A collection of key-value pairs Click to View Answer and Explanation Answer: c) A multi-dimensional data structure Explanation: An array in R is a multi-dimensional data structure that
1. What is a list in R? a) A sequence of numbers b) A collection of elements of the same type c) A collection of elements of potentially different types d) A key-value pair Click to View Answer and Explanation Answer: c) A collection of elements of potentially different types Explanation: A list in R
1. What is a vector in R? a) A list of numbers b) A 1-dimensional array c) A type of function d) A data frame column Click to View Answer and Explanation Answer: b) A 1-dimensional array Explanation: In R, a vector is essentially a 1-dimensional array that can hold numeric, character, or logical data.
1. Which loop structure in R is typically used when the number of iterations is known beforehand? a) while loop b) for loop c) repeat loop d) until loop Click to View Answer and Explanation Answer: b) for loop Explanation: The for loop in R is commonly used when the number of iterations is known
1. What is a user-defined function in R? a) A function provided by R packages b) A function created by the user c) A predefined function in R d) A function automatically loaded during R startup Click to View Answer and Explanation Answer: b) A function created by the user Explanation: A user-defined function in
1. What does the '==' operator do in R? a) Assignment b) Multiplication c) Equality test d) Increment Click to View Answer and Explanation Answer: c) Equality test Explanation: The '==' operator in R is used for testing equality between two values or expressions. 2. Which operator is used for matrix multiplication in R? a)
1. How do you concatenate two strings in R? a) + b) & c) paste() d) join() Click to View Answer and Explanation Answer: c) paste() Explanation: In R, the paste() function is used to concatenate or join two or more strings together. 2. Which function in R is used to determine the length of
1. Which of the following is a complex data type in R? a) String b) Integer c) Complex d) Boolean Click to View Answer and Explanation Answer: c) Complex Explanation: R supports complex numbers as a data type, which includes real and imaginary parts. 2. In R, what data type is used to store textual
1. What is the correct way to assign a value to a variable in R? a) variable = value b) variable == value c) variable <- value d) variable -> value Click to View Answer and Explanation Answer: c) variable <- value Explanation: In R, the most common way to assign a value to a