Pengyu is interested in the association between the height of professional basketball players and their free-throw percentage. She finds a statistically significant negative association in the entire last season of the NBA. Looking at her scatterplot, Pengyu finds that one player is much shorter and has a much better free-throw percentage than the rest of the players. She also finds that the negative association only exists for less experienced NBA players, not for more experienced NBA players. Identify the issues as either present or not present in Pengyu's study. Present moderator Press Space to open outlier Press Space to open restriction of range Press Space to open third-variable problem Press Space to open Not Present