Use R to build a scatter matrix using ggpairs(), making sure that the variable year is a categorical variable.

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Use R to build a scatter matrix using ggpairs(), making sure that the variable year is a categorical variable. Note which variables are most strongly correlated and which variables are most weakly correlated. Briefly explain the implications arising from some correlations being positive and some being negative. Comment on whether there appear to be any differences in performance between 1988 and 2016 athletes.

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