Answer Posted / Meenu

In R, character functions operate on character strings. Some common character functions include: {"substr": extracts a substring from a character string, "str_replace": replaces all occurrences of a pattern with another string within a character vector, and "gsub": substitutes all occurrences of a regular expression in a character string.}n

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