Manipulation lecture

[carriewright11]

There was some interest in examples of why you need joins - maybe could point to or show this case study as an example?
https://www.opencasestudies.org/ocs-bp-diet/

It has a pretty simple join of info about what would be expected dietary thresholds with a dataset of survey data of consumption of foods.

[carriewright11]

also this is the word "diet" but it is not about diet in the sense of people trying to lose weight... it is in terms of what foods people eat

[carriewright11]

Ava showed a cool grass example :)