One Star Is the Worst, Science Says
One-star reviews, in addition to being the least useful, are also the longest and most poorly written. Data journalism blog Priceonomics analyzed 100,000 online product reviews and found that 40% of reviews with one star contained at least one spelling error, compared to less than 30% of reviews with five stars.
However, five-star reviews are more likely to skip periods at the end of sentences – probably because they are shorter, and four-star reviews are likely to not contain apostrophes. Oddly enough, after adjusting for length, three-star reviews have the most frequent errors.
Aside from spelling and grammar, we still believe in the productivity godfather Merlin Mann’s rule of quality with a note:
Is there a connection between poor grammar and negative online reviews? | Pricing