De Econometrist neemt een statistische kijk op de wereld.
Remember those good old times when you could just use an all lowercase letter password of just six characters? You might have to bury deep into your memories, since those times are long gone. For me, the last such password I can remember, was my password for Spele.nl ten years ago. Back then, I could simply use turnen as my password, since that was my favorite sport. However, nowadays you need to include both lowercase and uppercase letters, characters, and numbers in your password, which also needs to be at least eight characters long. Why […]
One of the most popular regression methods an econometrician learns is the Ordinary Least Squares (OLS). It is a simple and elegant way of estimating parameters in linear regression. However, there is another technique to perform linear regression using concepts from machine learning. This concept is called gradient boosting and is also related to decision trees. Decision trees A decision tree uses a tree-like model of decisions and possible consequences. It is a very common data mining algorithm used for operations research, specifically in decision analysis. The idea behind it can easily be understood […]
In 1994, Nelson Mandela was in his first term as President of South Africa and tried to bring his divided country together. President Mandela knew that South Africa was radically and economically divided by Apartheid. In an attempt to unite his nation, he initiated a unique venture by inviting Franciois Pienaar, the Captain of the Springboks (the national rugby team), to come to the government palace for tea. Mandela gave Francois extra inspiration to win the 1995 Rugby World Cup in Johannesburg in order to unite his people through the universal language of sport. This […]
In July 2021 the 32nd Olympic Summer Games will take place. Or at least, that is the plan of the Japanese organizers and the International Olympic Committee. With the COVID-19 pandemic rates rising in Japan and global concerns whether organizing such a large event is responsible, it is not yet clear whether this plan is realistic. However, athletes around the world have no time to worry about this uncertainness. They need to be ready for when the time comes to defend the honour and glory of their country. This raises the question: which country actually […]
It started with marching bands, Micheal Jackson made it big, Diana Ross used a helicopter and Justin Timberlake caused women to be ignored for 7 years during the hiring process. We are of course talking about the Super Bowl Half-Time Show! The 15-minute extravaganza has been part of the sports event since the start and has helped it to become one of the largest broadcasted events each year. However, it took 26 Super Bowls to figure out that hiring A-list talent was the way to go. Michael Jackson, U2, Lady Gaga, Shakira & Jennifer Lopez, […]
It’s cold outside and the last couple of days it has been snowing heavily. Some people hate the snow and others love it, but I think we can all agree that a thick layer of snow gives some extra brightness to the world, especially in these dark winter months. This beautifulness of snow does not only apply to the new world it creates, it also holds for just a single snowflake. Most of us have seen a picture of a snowflake (or equivalently, a snow crystal) and the mesmerizing shape it has. But why does […]
Last week, many eyes were pointed at wall street. I am, however, not yet talking about the GameStop short squeeze that took place around the 27th of January. The establishment of new online stock trading platforms has served as an agora for the public to learn about stock trading and to sell and buy them with a tap on their phone. While sophisticated Wall Street brokers did not bother handling accounts with two hundred dollars, these platforms gladly took in any interested individual. The public took its share in online stock trading, while still being looked […]
You’ve probably heard of Reddit before. It is a social media platform consisting of a network of communities, called subreddits. Most people tend to use Reddit to post messages and share content with each other. Last week however, members of the subreddit r/wallstreetbets all helped raise the stock of Gamestop, a struggling American videogame retailer, from $20 to a stunning $480. This resulted in huge profits and losses, and overall a very volatile stock market. So, how did a group of redditors manage to dominate the stock exchange?
Commencing on a Ph.D. is a big decision. In a majority of cases, a Ph.D. will consume three to five years of your life. Even though a Ph.D. is a time-consuming journey, many people do not know exactly what a Ph.D. is and what advantages a Ph.D. has to offer. In fact, most first-year students are thinking of getting a Masters and to start with a non-academic job. Read this article to get more insight about doing a P.h.D! A Doctor of Philosophy (Ph.D.) is the most common degree at the highest academic level […]
In his dystopian novel ‘1984’, George Orwell introduces a society which is controlled by the government. All the news is fabricated and everything is monitored by the so-called “Thought Police”. The book discusses the consequences of an authoritarian government and how the manipulation of facts influences politics. For instance, the main job of the protagonist, Winston Smith, is to alter the news shown to society when it did not coincide with the way things really happened. Luckily, in our era things are way less extreme (at least in the Netherlands), but similarities can be drawn […]
Nowadays, in most countries, everyone has a surname. Some names are very common, like “de Jong” in the Netherlands, or for example “Nguyễn” in Vietnam, where almost 40% of the population has this surname. On the other hand, some surnames are extremely rare. For instance in Thailand, where surnames were largely introduced in 1913 and no family was allowed to duplicate any existing surnames. Perhaps, you have a very rare surname yourself. Then you might have asked yourself this question: will my family name ever go extinct? In this article, I will demonstrate a mathematical […]
Juggling, something we have all tried at least once in our life. For some, it resulted in the great satisfaction of three balls flying in perfect harmony through the air. For others, it was a traumatic experience of balls flying everywhere except for the right place. It is a quite challenging, but rewarding hobby. Some studies have even shown that people who learn to juggle have a boost in their brain development. Learning to juggle accelerates the growth of neural connections related to memory, focus, movement, and vision. But despite what some people might think, […]
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