Z scores suggest that British parlimentarians are using ChatGPT to write speeches.

I came across this article on social media:

https://www.pimlicojournal.co.uk/p/mps-are-almost-certainly-using-chatgpt

This got my attention, because I'm sick of people ragging on college students using AI. EVERYONE is using AI. That doesn't mean it is always OK or evil, but let's stop ragging on the kids.

Anyway, the author used data to make their claims via z scores:

https://www.pimlicojournal.co.uk/p/mps-are-almost-certainly-using-chatgpt

Ways to use in class:

1. I like to talk to students about data as evidence. In science, it can be evidence to reject or not reject a hypothesis. In real life, it can track trends, both innocuous and suspicious.

2. This is another way of talking about z scores, a crucial but less exciting aspect of basics statistics. As best as I can tell, this was the z score formula used:  frequency z score = (number of times phrase was used in a year - mean times the phrase was used in all years)/standard deviation of number of times the phrase was used in all years 

3. Who doesn't love a great AI example, especially one that demonstrates that fancy adults are using this tool as much as our students. 

4. I love gently-used second-hand data used for purposes that were never, every imagined by the original collector of the data (here, a data base of every word uttered in the UK parliament: https://hansard.parliament.uk/)