Are the scrutineers picking on my driver? - an unexpectedly timely series

Background: 

As in many sports, after each Formula 1 race, the equipment is scrutinised. 

In the heart of every Formula 1 fan lies a conspiracy theorist, and yes, the universe is out to get your driver or team. 

So, do the scrutineers pick on any particular driver? 

Methodology: 

This entire project would not be possible without the FIA Docs Bot on Mastodon (@fiadocsbot@mastodon.social - https://mastodon.social/@fiadocsbot) run by @seppewyns@mastodon.social (https://mastodon.social/@seppewyns). 

Originally, I started this last year, but things got away from me. FIA produce a lot of documents per race (normally 75-80 of them) so I lost track of the documents and I am not going back to find them. 

Therefore, I am restarting the project for this year. 

Matters are not helped by the tests not being the same each time, which means that putting the results in is a very manual process, but there will be more about that in the post about the Chinese Grand Prix. 

Results from the Australian Grand Prix 

There were a total of 812 checks. If they were evenly spread, you would expect 36.9 checks per driver. I have rounded this to 37. (I am aware that this rounding will affect the numbers over the season but you can't have .9 of a check.) 

Driver 5 (Gabriel Bortoleto) was checked the most, 41 times. 

Driver 27 (Nico Hülkenberg) was checked the least, 32 times. 

This makes me suspect that drivers that do not start the race get fewer checks. 

With 21 degrees of freedom, the χ² = 2.92 value is not statistically significant. 

Let's look at the deviations in one chart (thanks to R stats). This chart compares the standardised residuals for each driver. A driver with the exact number of checks performed as expected would have a value of 0.  

For the 4 drivers with the largest difference to expected, 2 had slightly more checks than expected (Bortoleto and Hamilton) and 2 had slightly less (Hülkenberg and Piastri). 

For Hülkenberg and Piastri this might be because they didn't start the race therefore their cars were not available for some of the pre-race tests as well as the post-race tests. 

Conclusion: 

At this time, no, the scrutineers are not picking on any driver. (I feel I need to add that's what I expect the end results to show too.)