In short, the 8-10 ratings are from those still cashing checks on this drivel.
The 4-7 ratings are from those posters who are sleep-posting after falling asleep having watched it.
The 1-3 ratings (mostly because, unfortunately, IMDB does not allow ratings of "0") are from those who got it right and are trying to save YOU from falling for the fake "Ooooh, watching a guy in a sheet and a silent woman walking around a house for 2 hours is SO amazingly good" fakers.
The 4-7 ratings are from those posters who are sleep-posting after falling asleep having watched it.
The 1-3 ratings (mostly because, unfortunately, IMDB does not allow ratings of "0") are from those who got it right and are trying to save YOU from falling for the fake "Ooooh, watching a guy in a sheet and a silent woman walking around a house for 2 hours is SO amazingly good" fakers.