I decided to select profile pictures from my friends on Facebook, because it is the only social media website I use in which I have at least fifty friends. By choosing Facebook, I knew I would probably be getting mostly profile pictures of the people themselves, unlike other social media channels, which may have lesser chances of profile pictures that are actually of the people themselves.
I went to my own profile page to get the profile pictures of the first fifty friends who appeared on my list, knowing that the list is somewhat sorted by how close you are with people on Facebook, or at least by how much content you share with each other and by how much you interact.
Link to spreadsheet here: https://docs.google.com/spreadsheets/d/1MaatyJY9dDYDDCLLpkh1SQg18NCZPI0TgMQ3X7Wz_sA/edit?usp=sharing
I initially couldn't decide how to analyze the fifty profile pictures I'd collected, so I started off with a general list of categories: bright, dark, single person, multiple people, headshot, waistshot, full body, scenery, illustration, not real people, looking into camera, not looking into camera, and candid. Organizing the pictures in these categories made me realize how many of them were headshots or waistshots, and of people looking directly into the camera. Generally, however, this is desired, because it's easier to identify people by seeing their faces clearly. For example, if I'm scrolling through my chat bar, it's filled with profile pictures. It is easier for me to find who I'm looking for if their profile picture is easily recognizable by their face.