Categorie: Statistiek

Mountain stage

Giro d’Italia: the fight for pink and against Covid

It is 16:00h. The tension is building. They are coming. In the distance, you hear the sound of helicopter blades swelling. You look around. Every flag imaginable is present, people have dressed up and they are ready to party. You check the live stream, they started the climb. A helicopter has come into view, getting closer by the second. The sound of cheers resonance up the mountain. The first rider is spotted two hairpins below. Almost now. Then they take the last turn before the one you are standing in. The thundering roars pierce your […]

06 mei • Door Jochem Hak Tijd om te lezen Estimated reading time: 5 minuten
universe

Are we alone in the universe?

Are we alone in the universe? A question that has occupied and fascinated human mind for generations. But with the enormous size of the universe, we can’t possibly be alone right? – Patrick Jans

27 april • Door Patrick Jans Tijd om te lezen Estimated reading time: 5 minuten
Newcombs paradox

Newcomb’s paradox

Let’s suppose that we have a game with two players. One is a person that will make a decision and the other is a supercomputer that will try and predict that decision beforehand. This computer has been tested many times and the testers have worked out that the computer can predict the decision of the player with 99% accuracy. The game works as follows: two boxes are placed in front of the player. One box is clear and contains a visible 1,000 euros. The other box is opaque, which means the contents are unknown to […]

15 april • Door David Anthonio Tijd om te lezen Estimated reading time: 5 minuten
why time speed up as we get older

Why does time seem to speed up when we get older?

With a deep sigh you blow out the candles on the cake. Today is your birthday and the whole family is congratulating you. You should be happy, but something is troubling you. Last year seems to have passed so quickly, even quicker than the year before. When you were younger, you never understood why your parents were always complaining about how the years went by so fast, but now you’re beginning to realise what they meant. Luckily, you’re not the only one that experiences it. It’s namely the story that everybody seems to understand; life […]

08 april • Door Casper de Vries Tijd om te lezen Estimated reading time: 4 minuten
Interview with TKP

Interview with TKP

TKP, have you already heard of them? When you are a student in Groningen, the answer is probably yes. You probably have encountered their famous ‘red tower’ on the ring road numerous times. However, there are also a lot of students who have heard of them but still do not know what it is exactly that they do. Therefore, we have performed an interview with Harm Donkers-Kim of TKP to get to know everything about them. In this article, we will discuss all the ins and outs of the company, their advancements in the field […]

30 maart • Door Sam Ansari Tijd om te lezen Estimated reading time: 5 minuten
Kolmogorov-Smirnov

The Kolmogorov-Smirnov Test

In statistics we are often estimating parameters and then, using some hypothesis test, we can find out if we should either reject our null hypothesis or not. Now in these tests we almost always rely on some known distribution of a so-called test statistic. Let us start by looking at an example of such a test. We will first need to assume that our sample follows a normal distribution with a known variance. Now we want to test if the mean of this normal distribution is equal to . Hence, we conduct the following test:   […]

09 maart • Door David Anthonio Tijd om te lezen Estimated reading time: 5 minuten

The true winners of the Olympic Games

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 […]

16 februari • Door Sjors Keet Tijd om te lezen Estimated reading time: 6 minuten
family name

Will your family name ever go extinct?

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 […]

21 januari • Door Stan Koobs Tijd om te lezen Estimated reading time: 4 minuten
The medical test paradox

The medical test paradox

Testing has been quite a significant subject during this pandemic. Around 30.000 people a day are being tested in the Netherlands alone, so it is quite important that such a test can accurately predict whether someone actually has the disease. However, an accurate test is not always as predictive as you would like. This phenomenon is also known as “the medical test paradox”.   Bayes’ rule The medical test paradox is an example that is quite often used to introduce Bayes’ rule. In Bayesian statistics, the interpretation of probability is expressed as a degree of […]

07 januari • Door Sam Ansari Tijd om te lezen Estimated reading time: 7 minuten

The EU emission deal: a small step into a greener direction

5 years ago, the world united in a way that it had almost never seen before: in Paris, on the 12th of december 2015, 196 countries agreed on tackling climate change and limiting global warming at the end of this age by a max of 2 degrees Celsius compared to pre-industrial levels.  However, the optimism didn’t last long. With Trump stepping out of the agreement, international collaboration reducing and the earth heating up by 1.2 degrees Celsius already, the UN has ringed all arm bells. It claims it is crucial to cut our emissions by […]

17 december • Door Sjors Keet Tijd om te lezen Estimated reading time: 3 minuten

Reversion to mediocrity

Nowadays, research in many fields involves statistics. Whether it comes down to a government’s decisions on measures fighting a pandemic or the Red Bull formula 1 racing team deciding on whether Verstappen should swap tires in the next lap, it sounds like a good idea to back the decision with statistics. For a fair amount of time, appliance of statistics has seemed one of the most irrefutable means of proving a claim or, in other situations, coming to the right conclusion. In their essence, statistics seem, when employed properly, to be telling the story as-is, […]

15 december • Door Pieter Dilg Tijd om te lezen Estimated reading time: 5 minuten
Hot hand

Do basketball players have a hot hand?

If you are a basketball fan, you are probably familiar with the term: the hot hand. This is often used when a player is on a scoring streak and it seems likely that he will also score the next point. He is very confident, he feels good, and therefore it seems like his hand is just “on fire”. Former Chicago Bulls coach Doug Collins famously told about their tactic at the end of the match when Michael Jordan was doing well: “Get the ball to Michael and everybody get the f*** out of the way”. […]

01 december • Door Stan Koobs Tijd om te lezen Estimated reading time: 8 minuten

By Daniele Zedda • 18 February

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