They are senior referees that have been given additional training in order to be able to objectively evaluate other referees and give them useful feedback in order to improve.
i think there are four referees.
NHL Referees make $127,000 a season
There are four referees in a baseball game.
They are technically called assistant referees.
There are no referees in ballet. There are instructors. At competitions there are judges.
3 referees are in soccer and football
It is either the F.A, The U.E.F.A or F.I.F.A.
No, both men and women can be referees in basketball
Referees do not wear any numbered jerseys.
Some referees are lawyers, policemen, firefighters and so on.
Referees are needed to see if the match is fairly played and to help if someone is injured.
There are not umpires in Basketball but there are referees. The referees are in charge of making sure the game is played correctly such as calling fouls, when needed.