# Posts Tagged ‘ probability ’

## Speaking at DataPhilly February 2016

February 5, 2016
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The next DataPhilly meetup will feature a medley of machine-learning talks, including an Intro to ML from yours truly. Check out the speakers list and be sure to RSVP. Hope to see you there! Thursday, February 18, 2016 6:00 PM to 9:00 PM Speakers: Corey Chivers Randy Olson Austin Rochford Corey Chivers (Penn Medicine) Abstract: […]

## Simple Distributions for Mixtures?

February 3, 2016
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$X$

The idea of GLMs is that given some covariates,  has a distribution in the exponential family (Gaussian, Poisson, Gamma, etc). But that does not mean that  has a similar distribution… so there is no reason to test for a Gamma model for  before running a Gamma regression, for instance. But are there cases where it might work? That the non-conditional distribution is the same (same family at least) than the conditional ones? For…

## The normal distribution – three tricky bits

January 18, 2016
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There are several tricky things about teaching and understanding the normal distribution, and in this post I’m going to talk about three of them. They are the idea of a model, the limitations of the normal distribution, and the idea … Continue reading →

## Collectionner les Figurines Lego avec ses Ami(e)s

January 14, 2016
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Dans mon précédant billet, je regardais combien de figurines Lego je devais acheter pour avoir toute la série, avec ma fille. Pour la série de 16, il fallait, en moyenne, acheter 54 sachets, à 3 euros pièces. Dans les commentaires, @Guillaume et @Gaelle me faisaient noter que les échanges, ça pouvait aider. Bon, tout d’abord j’aime pas qu’on donne des conseils à mes filles pour avoir raison contre moi !…

## Collectionner les Figurines Lego

January 10, 2016
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Tous ceux qui ont des enfants – ou qui jouent encore au Lego – le savent : régulièrement, Lego sort des séries de figurines, vendus en sachets individuels hermétiques, un peu comme les anciennes cartes à jouer. On est à la saison 15, et il y a 16 figurines par séries, D’ordinaire, les enfants réclament un paquet, quand on va dans un magasin de jeux (genre pour acheter un…

## Flip a fair coin 4x. Probability of H following H is 40%???

October 9, 2015
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A recent working paper has come out arguing for the existence of Hot Hands (in basketball), a concept psychologists had dismissed decades ago. Hot hands is where a player is thought to have a higher likelihood of scoring the next basket if the last thr...

## Petit exercice de proba

September 17, 2015
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Mardi dernier, on avait fait une série d’exercices de proba, et je voulais reprendre un exercice pour lequel j’avais proposé une vérification sur ordinateur. Pour résoudre l’exercice, j’avais suggéré la méthode suivante. est tiré parmi , alors que est tiré parmi .  On note assez facilement que le plus petit nombre est , et comme le ppcm de  et  est , (je laisse faire les calculs pour montrer qu’effectivement, au delà, on n’est plus dans les ensembles…

## Odds and Probability: Commonly Misused Terms in Statistics – An Illustrative Example in Baseball

Yesterday, all 15 home teams in Major League Baseball won on the same day – the first such occurrence in history.  CTV News published an article written by Mike Fitzpatrick from The Associated Press that reported on this event.  The article states, “Viewing every game as a 50-50 proposition independent of all others, STATS figured the […]

## Odds and Probability: Commonly Misused Terms in Statistics – An Illustrative Example in Baseball

Yesterday, all 15 home teams in Major League Baseball won on the same day – the first such occurrence in history.  CTV News published an article written by Mike Fitzpatrick from The Associated Press that reported on this event.  The article states, “Viewing every game as a 50-50 proposition independent of all others, STATS figured the […]

## How Predictable is the English Premier League?

May 19, 2015
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The reason why football is so exciting is uncertainty. The outcome of any match or league is unknown, and you get to watch the action unfold without knowing what’s going to happen. Watching matches where you know the score is never exciting. This weekend the English Premier League season will conclude with little fanfare. Bar […]