Exerceise 5.1.5 #5. Use geom_smooth() to detect trens in a large dataset

[HossamGhorab]

The question asks which geom_*() to use ti detect the trend i a large dataset. geom_smooth() seems reasonable, especially in a large data set. ++ In 3.5.2 Different Groups on Different Layers, Hadley used it to detect the trend.

https://github.com/kangnade/ggplot2-solutions/blob/e6ef9e3b271599f6e97afc0f8a3f012f276f9385/ggplot2_solutions_chapter5.Rmd#L183

Warmly, Hossam