Computing multiple stats
Let's now combine everything from the past two exercises to find multiple summary statistic with multiple groups in batrips.
Este ejercicio forma parte del curso
Data Manipulation with data.table in R
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Compute mean of duration and total trips grouped by start and end stations
aggregate_mean_trips <- batrips[, ___, ___]
aggregate_mean_trips