The data set {+3, -1, -2, +1} shows The moves a player made forward or backward in a board game graph the moves the player made explain the meaning of the role in the situation.

We have the data set:
[tex]\mleft\lbrace+3,-1,-2,+1\mright\rbrace[/tex]This shows the moves a player made forward or backward in a board game. Then, graphically, this is:
In this situation, 0 means that the player stayed at his position.