Observe that resampled_means has 35 rows corresponding to the 35 means based on the 35 resamples. Furthermore, observe the variation in the 35 values in the variable mean_year. Let’s visualize this variation using a histogram in Figure 8.11. Recall that adding the argument boundary = 1990 to the geom_histogram() sets the binning structure so that one of the bin boundaries is at 1990 exactly.