De Econometrist neemt een statistische kijk op de wereld.
Squaring the square is a method of creating an integer square out of other smaller integer squares. Well what even is an integer square? Integer squares are squares whose sides have integer lengths. One example of a normal squared square is a 4×4 square created out of four 2×2 squares. That wasn’t too difficult right? But let us now add the following restriction; the sizes of the smaller squares need to be different. Can you come up with the solution of that particular squaring the square problem? And what if we add another restriction; no […]
‘Forever young, I want to be forever young! Do you really want to live forever, forever and ever young?’ is what has been sung in a popular song. This question has been asked frequently by a lot of people. The answer to this question certainly differs per person. Yet, we are trying to figure out for hundreds of years what makes people older and what doesn’t, in order to live longer ourselves. One of the great ways to investigate this is by looking at Blue Zones. In this article we will dive into one specific […]
Since January first 2019 the VAT has been raised by the Dutch government from 6% to 9%. This increase gave shop owners a choice: increase prices to pass the costs on to the customer or keep the prices put to have the opportunity to obtain competitive advantages. Over the course of three months more and more companies increased their prices. However, in most cases this increase was more than the 3 percentage point caused by the rise of the VAT. This could make you wonder what caused the other part of the price increase. In […]
The story goes that Thales of Milete, the Greek philosopher, wanted to disprove the claim that philosophers don’t know how to make money. He therefore used all the money he had to buy all available olive presses right before the harvest. After this, he could rent them out at a really high price when demand peaked. This became known as one of the first examples of a monopoly. Horizontal vs. vertical progress Everybody strives for progress in one way or another. A baker wants to bake better breads, a supermarket strives to get more customers […]
Some students are already done with the exams and others are still studying to get as many ECTS as possible (in other words, surviving in the university library). In both situations it is nice to solve a little puzzle and to use your brain for something else than only numbers. Since I enjoy the econometric memes a lot, I made a rebus of an econometric meme. I hope you can solve the rebus and will enjoy the meme. If so, you can contact me and I am happy to share more great econometric memes with […]
How did Google become so successful? What did the first search engine look like? The answer to these questions is related to a pretty basic mathematical concept which was revolutionary in that time. In this article I will tell you about the PageRank algorithm, which is the first and best known algorithm that Google uses. You may have heard the name earlier, Larry Page, he is one of the founders of Google and also one of the richest men in the world. He studied computer science at the University of Michigan and at Stanford University. […]
According to legend, the famous Achilles, hero of the Trojan War, was the fastest runner in all of Greece. One day an lazy old tortoise challenged Achilles to a race, claiming that he could win as long as Achilles gave him a small head start. Achilles laughed and told the tortoise he would surely lose, on which the tortoise replied: “On the contrary, I will win, and I can prove it to you by a simple argument.” The argument given by the tortoise is the famous Zeno’s paradox, a piece from a series of paradoxes […]
Een Exchange Traded Fund (ETF) is een fonds samengesteld uit verschillende aandelen en/of obligaties om zo in zijn risico en rendement een gelijk resultaat te behalen als een bepaalde index. ETF’s bieden veel positieve effecten, zo kunnen onder andere investeerders met een kleine hoeveelheid kapitaal toch hun risico spreiden, doordat een ETF bestaat uit meerdere componenten, en dus hoeft een belegger niet elk aandeel los te kopen. Wanneer je dan een ETF wilt kopen, springt er misschien een vraag in je gedachte: hoe is het eigenlijk mogelijk dat je op ieder moment dat de markt […]
Op een afgelegen eiland leven tweehonderd gevangenen. Honderd van hen hebben blauwe ogen, honderd hebben bruine ogen. De gevangenen hebben geen kennis van deze verdeling, noch van hun eigen oogkleur. Verder leeft er een bewaker op het eiland, die de gevangenen nauwlettend in de gaten houdt. Dat is wel nodig, want de gevangenen kunnen allemaal perfect logisch nadenken. Ze mogen van de bewaker op geen enkele manier met elkaar communiceren. Ze krijgen echter een kans om het eiland te verlaten; Zo vertelt de bewaker, welke zelf groene ogen heeft: “Vertel mij welke kleur ogen je hebt, en […]
“Here’s to the crazy ones. The misfits. The rebels. The troublemakers. The round pegs in the square holes. The ones who see things differently. They’re not fond of rules. And they have no respect for the status quo. You can quote them, disagree with them, glorify or vilify them. About the only thing you can’t do is ignore them. Because they change things.” I happened to come across this famous quote by Rob Siltanen, director of Apple’s ‘Think Different’ campaign (1997). The ‘you’ in the quote is referring to Apple, the – market value speaking […]
Today is international Pi-day: the 14th of March, also denoted as 3.14, which are the first digits of . To celebrate this beautiful day, let us read and analyse the following poem: Yes! A rare procrastination Something to donate poems and avoid homework Challenge: deliver beautiful and pi-fun messages! This message may seem as just a couple of sentences that are formed a little unnaturally. It does make sense however, as the poem follows a strict structure. If you write down the length of all words in the poem, you will find the following: 3 1 […]
You may have heard that the Dutch government bought 12.7 percent of Air France-KLM share worth 680 million euros. This has brought up a lot of commotion between the French government and the Dutch. The Netherlands actually already had some stocks in KLM but not in Air France-KLM. So why did the Dutch government suddenly buy these stocks in secret? Dutch economy and KLM The primary reason for this is the fact that Air France is not doing so well. If we look at the numbers we see that Air France’s profit is much lower […]
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