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Comparison of Michelin and Gault Millau ratings: 2025 update

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It's been a year since my analysis of restaurant scores and both Michelin and Gault Millau have published new editions with updated scores. The perfect oportunity for an update on my analysis! This is just a quick follow up, to get full context of what we're doing here I higly recomend reading my post on the original 2024 analysis first. The first thing I looked at was the average Gault Millau score of the three rating categories of Michelin and wether they changed a lot from last year. I would say they did not, at most there was a 0,15/20 point difference between averages. Leading me to conclude that there is a high consistancy over time regarding these averages. To confirm the obvious I've ran a one way annova, which is a statistical method to check if a categorical variable (the Michelin scores) can predict a continuous one (the Gault Millau scores). The results where a P value (significance) of P<2e-16 and an Eta squared (effect size) of η²=0,51 . Both of these are ...
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Comparison of Michelin and Gault Millau ratings

Door
Afbeelding
There are two well known rating systems for high end restaurants in Europe, Michelin and Gault Millau. If you regularly look up both ratings for a specific restaurant you can notice the obvious correlation between the two. Which made me wonder, what the average Gault Millau score of the three star ratings of Michelin would be. Additionally I've read that Gault Millau purely rates the quality of the food while Michelin is focused on the whole experience. So there could possibly be some restaurants with more focus on one or the other that show up as outliers.  To answer this question I wrote a script (details below) to scrape both websites and return the score of all restaurants they rated. I limited this to Belgian restaurants to keep this project quick and easy, since i'm just doing this for fun and out of personal interest (I live in Belgium). The results can be seen in the plots below. On the box plot we can see the average scores of each star rating. The 1* restaurants have ...
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