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.
1. an impudent statement. 2. the trait of being rude and impertinent; inclined to take liberties. 3. inappropriate playfulness. Familiarity information: IMPERTINENCE used as a noun is uncommon.