My presentation for the Scottish Maths Conference 2023 can be found here!
https://www.applyingmaths.com/wp-content/uploads/2023/05/SMC-Files-2023.zip
It includes two worksheets, a PowerPoint with videos covering Goal Seek and R Studio, as well as a data set.
The original dataset can be found here: https://corgis-edu.github.io/corgis/csv/coffee/.