Answer Posted / Manindra Nath Singh

"R has several types of data structures, including:nn1. Vector: A collection of elements of the same type (numeric, character, logical).n2. Factor: Categorical variables represented as integers.n3. Matrix: A two-dimensional array with rows and columns of equal length.n4. Data Frame: A collection of vectors or factors, where each vector or factor represents a column and shares the same row indexes.n5. List: A generic data structure that can contain elements of any type.

Given a vector of numbers, how would you turn the values into scientific notation?

103

How can you verify if a given object “X” is a matrix data object?

118

How will you convert a factor variable to numeric in r language?

148