Answer Posted / Rakesh Kumar Lohani

A matrix in R is a two-dimensional array with both rows and columns of equal length, while a data frame is a collection of related variables organized into named columns. Data frames are more flexible than matrices as they can contain factors (categorical variables) and missing values.

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

103

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

148

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

118