Categorie: Econometrie

Friendship

The secret recipe for making friends

It is the spring of 2021. A vaccine for Covid-19 has been distributed and life is getting back to normal. The weather is improving and it is the so-called first ‘Rokjesdag’. The perfect day to hit the terrace with your friends. You are enjoying a drink with your friends, while reminiscing all the good times you had together before the pandemic. You mention that it is quite remarkable that even though you could not really spend time together, you still kept in contact with each other. One of your friends responds that it is only […]

22 september • Door Jochem Hak Tijd om te lezen Estimated reading time: 6 minuten
Motivated reasoning causes a lot of biases and smart econometricians might even be more susceptible to this.

Why smart econometricians say stupid things

A lot of different opinions circulate through society about the ongoing corona crisis. One thinks that the government imposed ridiculous measures, another believes that the government is being far too lenient and maybe you feel that it is fine this way. Even among researchers, there is still a lot of dissension. Where does this radical difference of opinions come from if everyone has the same data? Motivated reasoning Obviously, fighting the coronavirus is a complex problem and therefore, there is not one simple solution. However, this polarity among experts in the field can partially be […]

01 september • Door Stan Koobs Tijd om te lezen Estimated reading time: 6 minuten

Mr. Pity vs. Nature

Mr. Pity was a very, very unlucky man. As a kid he had once accidentally stepped on a butterfly in the forest. But this was no ordinary butterfly! It was the most beautiful butterfly Nature had ever produced. Out of revenge, Nature cursed young Mr. Pity: “Whatever you do, I’ll try to make your life as miserable as possible!” Now, Nature’s curse became evident every time Mr. Pity faces a decision in which uncertainty is involved. For Nature is the one that pulls the strings in all probabilistic situations. Thankfully, however, the Creator had been […]

02 juli • Door admin Tijd om te lezen Estimated reading time: 9 minuten

Italië en haar roze bril

De afgelopen weken staan het Coronavirus en Italië centraal in het nieuws. Hierbij gaat het onder andere over de houdbaarheid van de schuld van Italië. Nederland neemt hier een harde houding in aan. In het artikel “Italiaans begrotingsbeleid is struisvogelpolitiek” van de ESB (John Lorié en Theo Smid, 2020) wordt een aantal scenario’s geanalyseerd. Naast dat het Coronavirus de gezondheid aantast, tast het ook de economie aan. Het Coronavirus zorgt onder andere voor een lagere economische groei, lagere belastinginkomsten en meer uitgaven. Voor een land als Nederland is dat op te vangen, aangezien er een […]

16 april • Door Esther Valkonet Tijd om te lezen Estimated reading time: 4 minuten

The math behind the coronavirus

At the moment we live in a big crisis, the corona crisis. Already more than one million people over the world are infected and more than 60,000 people died. A lot of countries are having big outbreaks and the health care is having capacity problems. This is also one the many articles which you probably have seen about the coronavirus. What distinguishes this article from the rest is that it will dive a lot deeper into the mathematical models which researchers use to forecast the spread of the coronavirus. It is of course extremely important […]

07 april • Door Stan Koobs Tijd om te lezen Estimated reading time: 6 minuten

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

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

By Daniele Zedda • 18 February

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