Please be aware that the video code along Rmd file contains extra practice questions that are not covered in the lesson video. We recommend that you complete all the practice questions provided in the code along, even if they are not mentioned in the video.

🚗 Video too fast or too slow? Click the gear icon ⚙️ at the bottom-right to change the speed!

Lesson code

Please download the zip folder below to code along with the instructor.

You need to unzip this folder to code along. Or “Extract All” on Windows. See our video explanation of this if you are unsure.

Lesson notes

The written guide below is an accompaniment to the lesson video. You may read through it if you prefer written tutorials to video content.


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I found that the package ‘Lubridate’ as used was new to me. It came with no further clarification to the audience. However, I looked it up later.

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