Categorie: Econometrie

Hoe een kleurenblinde jongen de allerbeste werd – Interview met Mats Valk

Het is een leuke party trick: het oplossen van een Rubik’s kubus, en dan het liefst zo snel mogelijk. Voor de 23-jarige Mats Valk, tweevoudig wereldrecordhouder en Europees kampioen speedcubing, is het echter wel meer dan dat. Wekelijks is hij urenlang bezig met het bijhouden en perfectioneren van zijn skills. In dit interview (dat wegens het Covid-19 virus via Skype plaatsvond) vertelt hij goedlachs over deze passie, het imago dat speedcubing als sport heeft en de link met econometrie.   Laten we beginnen bij het begin: waar is bij jou de fascinatie voor het Rubik’s […]

31 maart • Door Sjors Keet Tijd om te lezen Estimated reading time: 9 minuten
the optimal pace problem

The Optimal Pace

For professional athletes, the goal of running a marathon is to complete it as fast as possible. However, this does not mean that the athletes are running as hard as they can all the time, as one cannot maintain this pace the entire marathon. Hence they need to find a maintainable pace at which they finish the marathon as fast as possible: the optimal pace problem. It turns out that this very general problem is occurring far more often in normal day life and in business than most of us realise. Furthermore, it turns out […]

12 maart • Door Casper de Vries Tijd om te lezen Estimated reading time: 4 minuten

Is life a video game?

Reality is probably not what it seems. The simulation hypothesis proposes that all of reality, including the earth and the universe, is in fact, a computer simulation. This proposition is, in fact, based on fundamental principles of human reasoning. Billions of years have passed since the formation of the earth. Early carbon-based life forms have had compelling experiences, to say the least. Imagine for a second, that the senses we experience, the things we observe, are all but a simulation, in which we are the “sims”. Computational power is increasing at an unprecedented rate, unlike […]

05 maart • Door Berke Aslan Tijd om te lezen Estimated reading time: 3 minuten
Predicting the spread of the Coronavirus

Predicting the spread of the Coronavirus

With over 86,000 people infected and around 3,000 people killed, the new Coronavirus is something to be taken very seriously. The new virus which has been called Covid-19 was discovered in Wuhan, China earlier this year. Not only has it taken a big toll on the Chinese economy, other countries in the world are being affected by the virus as well. In order to tackle the virus, several organisations have volunteered to help China with the fight against the virus. Moreover, several scientists are coming up with models to predict where and when the virus […]

03 maart • Door Sam Ansari Tijd om te lezen Estimated reading time: 12 minuten

How algorithms can choose your date

Feeling spontaneous, the mayor of Groningen wants to help all singles in the city. He wants to do this by organizing a date for every single in town. Since he thinks that you are pretty smart, because you study econometrics, he gives you the job of making all the combinations for the dates. How would you do this? In this case, we assume that we know the preferences of everyone. So from every man, we get a list with a ranking of women he prefers and from every woman we get a list with a […]

06 februari • Door Stan Koobs Tijd om te lezen Estimated reading time: 3 minuten
The beauty behind differential equations

The beauty behind differential equations

It is one of the most difficult courses of the year: Difference and differential equations. Where most us do not really understand what we are actually learning and doing. In this article I will try to explain that differential equations are actually one of the most beautiful concepts in mathematics. What is a differential equation? A differential equation is an equation that relates some function with its derivatives. In applications; differential equations give us an understanding how physical phenomena relate to their rates of change. The laws of physics are usually always describable through differential […]

17 december • Door Sam Ansari Tijd om te lezen Estimated reading time: 5 minuten

How to Lie with Smoking Statistics

In 1953 publiceerde Ernest Wynder een onderzoek over longkanker, waarbij hij het teer uit sigaretten met een borstel op 81 muizen smeerde. Het resultaat van dit onderzoek was dat 44 procent van de ingesmeerde muizen kanker had gekregen en slechts 10 procent van de totale groep was na twintig maanden nog in leven. Bij de niet-ingesmeerde muizen was er bij geen van hen kanker gevonden en 53 procent was nog in leven na twintig maanden. Vanzelfsprekend liet dit onderzoek vele mensen schrikken. Het gevolg hiervan was dat de aandelen van de tabaksindustrie flink in waarde […]

12 november • Door Esther Valkonet Tijd om te lezen Estimated reading time: 5 minuten
Predicting outcomes of tennis matches

Predicting outcomes of tennis matches

In the article posted 4 weeks ago about the dark side of the tennis world I talked about how vulnerable the tennis sport is to match fixing. Bets can even be placed on every single point. However, is there a way to predict the outcome of matches and maybe even points? There are multiple articles that have tried to solve this problem. Many of these articles mention Markov models as I explained earlier. Now I will be digging deeper into this subject and try to predict a match between Rafael Nadal and Roger Federer. Markov […]

05 november • Door Sam Ansari Tijd om te lezen Estimated reading time: 12 minuten

Flauwekulcijfers herkennen

In oktober 2018 gaf Sanne Blauw, econometrist en journalist, een boek uit met de titel Het bestverkochte boek ooit. De reden voor deze titel was dat Sanne in dit boek wilde laten zien dat je cijfers niet zomaar voor lief moet nemen. Cijfer horen niet op een voetstuk, ook niet bij het afval, maar gewoon waar ze horen, naast de woorden. We zouden cijfers net als woorden namelijk niet zomaar blind moeten vertrouwen. Hoewel cijfers objectief lijken zijn zij dit niet.  Iedereen heeft in het dagelijks leven te maken met cijfers. De cijfers op de […]

10 oktober • Door Esther Valkonet Tijd om te lezen Estimated reading time: 3 minuten

Putting the con in Eurovision Song Contest

May 18, for the first time in 44 years Holland received one of the biggest prices in existence. Approximately 182 million people from all over the world witnessed the epic battle that was decided in the last minutes of the contest. Of course you will know which contest is meant: The Eurovision Song Contest! On the 18th of May, Duncan Lawrence grasped the victory with his song Arcade. With 498 points he beat runner-up Italy with a mere 26 points. This is of course very exciting because it means that in 2020 the Eurovision Song […]

08 oktober • Door Jochem Hak Tijd om te lezen Estimated reading time: 7 minuten

Optimizing Morse Code

Dot, dot, dot, dash, dash, dash, dot, dot, dot: SOS! You have most certainly heard of this so-called ‘Morse Code’. Morse Code is a code in which letters, numbers and even some punctuation marks are represented in dots and dashes. Back in the days, this was a very useful way of communicating over longer distances. With a so-called telegraph, people would send small electric shocks, where a short shock would be a dot and a longer shock would be a dash. They used predetermined intervals to indicate for example a space in a sentence. The […]

26 september • Door Lars Beute Tijd om te lezen Estimated reading time: 3 minuten

Doomsday Argument

Het einde van de mensheid, heb jij enig idee wanneer dat zal zijn? Nee, ik ook niet. Brandon Carter heeft in 1983 een poging gedaan om dit te bepalen met behulp van kansrekening. Echter wordt zijn theorie ook wel een van de meest betwiste toepassingen van de kansrekening op het echte leven genoemd. Carter maakt in zijn theorie namelijk gebruik van deuren met kleuren en cijfers. Aan de hand hiervan probeert hij een voorspelling te doen over wanneer de mensheid uit zal sterven. Maar is het wel mogelijk om het einde van de mensheid wiskundig […]

11 juni • Door Esther Valkonet Tijd om te lezen Estimated reading time: 5 minuten

By Daniele Zedda • 18 February

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