Bigfoot
19
UFO
40
Ghost
43
2
4
9
2
Amauri Fredericks Diagram
42-2=40 believed in UFOs
45-2=43 believed in ghost 21-2=19 believed in Bigfoot 11-2=9 believed in UFOs and ghosts
6-2=4 believed in ghosts and Bigfoot
4-2=2 believed in UFOs and Bigfoot
2 believed in all three
40 UFO
43 Ghost
+19 Bigfoot
-------------------
102