How do I install Google Analytics on WordPress

Hi All,
Very much a newbie here. I have a free template named “Arclite”and I want to install Google Analytics. How do I do that? I have gone to the “Editor” section under Themes and have looked for the </body> part of the code to enter as Google instructs. I can’t see it anywhere. What do I do?

Thanks in advance to any knowledgeable user out there that can help,
Doug