As a child, Paul was bitten by a spider and thereafter developed an intense phobia of them. In an effort to cure Paul's phobia, a psychologist gradually exposed him to spiders. After many sessions of having nonthreatening experiences with spiders, Paul's phobia was cured. This is an example of

Griffin correctly concludes that the coordinate pair for the russian federation is an influential point, because removing the russian federation from the relationship will significantly change the trend of the regression line. is an influential point, because removing the russian federation from the relationship will not significantly affect the estimated coefficient of determination of the regression line. is not an influential point, because the russian federation does not have the highest cvdir of all 1111 nations in the scatterplot. is an influential point, because removing the russian federation from the relationship will not significantly affect the estimated slope of the regression line. is not an influential point, because the russian federation has a positive residual in the least-squares linear regression.