Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

The first component can be accessed using __________ operator.

a) Intraction
b) Extraction
c) AND
d) OR

Answer: b
Explanation: There are a number of ways of accessing the first component of a list. We can either access it through the name of that component (if names are assigned) or by using a number corresponding to the position the component corresponds to. The former approach can be performed using subsetting ([[]]) or alternatively, by the extraction operator ($).

Join The Discussion