Question

 

 Explain vectors, data frames and matrices in R. Describe their creation, operations, accessing elements, manipulation operations and applications with examples.

06 Mar 2026
Answer :
Word Count : 922
In R, vectors, data frames, and matrices are fundamental data structures used extensively in data analysis, statistical modeling, and programming tasks. Understanding their creation, operations, accessing elements, manipulation, and applications is essential for effective data analysis with R. A vector is the simplest R data structure, representing a sequence of elements of the same type, such as numeric, character, logical, or integer. Vectors can be created using the `c()` function, which combines multiple elements into a single vector. For example, `v <- c(1, 2, 3, 4, 5)` creates a numeric vector containing five elements. R also provides functions like `seq()` to generate sequences, e.g., `seq(1, 10, by=2)` produces `1, 3, 5, 7, 9`, and `rep()` for repeating elements, e.g., `rep(5, times=3)` gives `5, 5, 5`. Basic operations on vectors include arithmetic operations like addition, subtraction, multiplication, and division, which are applied element-wise. For instance, if `v1 <- c(2, 4, 6)` and `v2 <- __________ ________ ___ _______ __________.
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