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Using the tapply() Function in R

Steven Sanderson applies things a different way:

Hey R enthusiasts! Today we’re diving into the world of data manipulation with a fantastic function called tapply(). This little gem lets you apply a function of your choice to different subgroups within your data.

Imagine you have a dataset on trees, with a column for tree height and another for species. You might want to know the average height for each species. tapply() comes to the rescue!

Read on to see how it works.