If you notice the ranking is not consecutive with the use of the RANK function; that is because the RANK function ranks records of the result-set sequentially starting from 1. When it finds a tie it assigns the same rank to the all the records in the tie, but still keeps incrementing the record counter so the next record will get a new rank which would be (previous rank + no of records in the current tie + 1) .
not plausible; not having the appearance of truth or credibility: an implausible alibi. Origin of implausible. 1595-1605.
Something that's Implausible is farfetched or unlikely. If it's 3pm and you still have to study for three exams and write an essay before midnight, its implausible that youll also have time to watch a movie. The adjective implausible breaks down into im, meaning not, and plausible, meaning likely.