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Erik Gahner Larsen

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26. June 2022
  • science

25 interesting facts #21

501. Tigers have experienced little evolutionary pressure to evolve green coloration and they appear green to deer (because deer are dichromats) (Fennell et al. 2019) 502. In the United States, Holocaust survivors are more supportive of helping refugees (Wayne and Zhukov 2022) 503. There is a talisman effect in insurance, i.e., consumers who have an […]

25. June 2022
  • culture

Breaking Bad bliver bedre #2

For små ti år siden skrev jeg et indlæg med den pointe, at Breaking Bad bliver bedre over tid. Jeg skrev det pågældende indlæg før serien var afsluttet, og det er derfor på sin plads med en lille (forsinket) opdatering. I nedenstående tabel viser jeg de gennemsnitlige IMDb ratings for de fem sæsoner. Der er […]

19. June 2022
  • statistics

Potpourri: Statistics #85

– Introduction to Data Science: Data Analysis and Prediction Algorithms with R – K-Nearest Neighbor (KNN) Explained – The Ultimate Guide to Deploying a Shiny App on AWS – Controlling for “X”? – The Bias Variance Tradeoff – Double Descent: A Visual Introduction, A Mathematical Explanation – Decision Trees – The Importance of Data Splitting […]

18. June 2022
  • public opinion

Hvor mange vil stemme på Nye Borgerlige? #11

For seks år siden, den 18. juni 2016, kunne diverse medier rapportere, på baggrund af en meningsmåling, at hver tiende vælger ville stemme på Nye Borgerlige. Den pågældende meningsmåling var foretaget af Voxmeter og fik ikke overraskende en del omtale. Jeg kritiserede dengang meningsmålingen for at være ikke alene af tvivlsom karakter, men også decideret […]

12. June 2022
  • statistics

At what age are people considered old? #2

In 2018, I wrote a post about a data visualisation showing that the age you consider ‘old’ is the square root of your age times 8. So if you are 25 you will consider 40 to be old. In brief, my main problem with the data visualisation was the low N (~200), i.e., the small […]

11. June 2022
  • latex

Potpourri: LaTeX #9

– The Not So Short Introduction to LaTeX2ε – Latex code for making neural networks diagrams – Drawing Bayesian networks, graphical models, tensors, and technical frameworks and illustrations in LaTeX – TikZ library for drawing Bayesian networks, graphical models and (directed) factor graphs in LaTeX – LaTeX Tips – I hate LaTeX. I love LaTeX. […]

5. June 2022
  • recommendations

Assorted links #15

421. Megastudy scepticism 422. A regular expression to check for prime numbers 423. Mathematically Correct Breakfast: Cut a bagel into two linked halves; Cut a bagel into a trefoil knot, two ways 424. So You Want to Study Mathematics… 425. A collection of pure bash alternatives to external processes 426. The White Darkness: A Journey […]

4. June 2022
  • public opinion

Hvor gode var meningsmålingerne om forsvarsforbeholdet?

Folkeafstemningen om forsvarsforbeholdet endte med et overbevisende flertal til en afskaffelse af forsvarsforbeholdet (med 66,9% til ‘Ja’). Hvordan klarede meningsmålingerne sig? Min konklusion er, at Gallup og Megafon havde et godt valg, og Epinion og Voxmeter havde et mindre godt valg. For at komme frem til denne konklusion tog jeg den seneste meningsmåling fra hver […]

29. May 2022
  • public opinion

Kan vi stole på meningsmålinger?

Hos Zetland kan man læse en artikel om, i hvilket omfang man kan og bør stole på meningsmålinger. Jeg udtaler mig herom i artiklen og giver et par kommentarer relateret til meningsmålingernes anvendelighed. Jeg har i løbet af årene publiceret et tocifret antal videnskabelige artikler, der anvender data fra spørgeskemaundersøgelser. Jeg har ligeledes i forskellige […]

28. May 2022
  • statistics

How to improve your figures #9: Use colourblind-friendly colours

Colours are often used in data visualisations to emphasise variation, ease interpretation and make them aesthetically pleasing. However, we do not all see colours in the same way and you should take this fact into account when you design figures. Specifically, as a start, you should make sure that everybody can actually see the variation […]

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