Fill in the blanks:
In prediction markets, no individual opinions are excluded. Everyone can give an opinion. Also, since the group's decision is arrived at ________ , no one is forced to change their opinion.
- statistics ||| 2. statistic ||| 3.statistically ||| 4. statistical ||| 5.statistician
(Question from Inside Reading 4)
The answer of the book is "3. statistically". But I think it sounds odd. My instructor somehow justified the answer but he also said that maybe something is missing here. If it is the correct answer, I want to know why and if it is not, then what is the correct answer? (I think maybe "1. statistics" is the correct answer)