# Search results

1. ### Is this matematical problem also related to some statistic predictive model problem?

For example: calculataing that area could be a different way to predict instead of minimizing the sum of sum of least squares the problem is to calculate the Area here:
2. ### black scholes equations applied to tennis

Hello betfair trader here. I ask this question here because here is full of smart guys. Can I model a tennis match or some statistic regarding a tennis player using black scholes equations? I mean: can they come useful when applied in tennis in order to model the...
3. ### What is lookback lenghts regression?

what is it and when is used? I have red about this but I don't know when it's used and its purpose. Can someone be so kind to explain me a little bit what is used for?
4. ### Markov Chain Models in tennis

If you already know tennis rules you can skip this wall of text and go directly to the end. If you don't know them... well could you read please? It's a simple introduction on how it works. In tennis, each game is won when one player achieves both of two goals: her score 1...
5. ### What can use to extrapolate a cause-effect relationship between 2 variables?

Let's assume that I have found a correlation or an association between two variables. How can I find out if there is cause-effect relationship between the 2 variables? question: The difference between an association and a correlation? A strong association automatically...
6. ### How can they predict the shape of the bell?

How can they predict the shape of the bell? (distribution of the possible numbers of infections over the days) During this corona virus I have seen many pics of normal distributions which should predict the number of the infections over the days. As predictive model I only know...
7. ### equilibrium distribution.

These algorithms create Markov chains such that they have an equilibrium distribution which is proportional to the function given. could you explain me what does this statment mean with equilibrium distribution which is proportional to the function given? With a simple example...
8. ### Should I use cox regression for this purpose?

Should I be using cox regression for this? I am analyzing the performance of a tennis player. I want to understand how long on average his performance starts to drop during a match. I indicate an optimal performance when the tennis player makes a good number X of aces a number Y of double fouls...
9. ### what is the drop out problem in Markov chain?

Can someone please explaine to me what is the drop out problem?
10. ### Gaussian process and Gaussian regression

Hello, I have some problem understing the Gaussian regression and the way it works. Could you please explain to me some things? The first thing I don't understand is why this regression does it use the joint/multivariate probability to get new value of the Y? The...
11. ### How can be used time series in sport?

Hello, noob here in statistics. How can be time series be useful to sport stats modelling? Let's take as an examplem footbal
12. ### What is the difference between sample algorithms and algoritms for estimating parameters?

I have red this in the website: MCMC is a family of sampling algorithms, which means given a distribution, these algorithms return samples according to this distribution. Many problem, bayesian posterior inference for instance, require you compute the posterior distribution P(θ|D), most of...
13. ### Weighted avearge mean

Hello here is my problem. I am analizying some tennis matches, and I am able to see the highest odd (bookmaker's odd) reached by that tennis player in N-matches (N is number of matches) Then I take all the highest odds reached by that tennis player during his N-matches , and...
14. ### Before to making a regression

Hello I want to ask you, before to making a regression should we understand which distribution follow the datas? Let's take an example: if the data have a poisson distribution, then I will run a Poisson regression? If the data follow a gaussian then one should use...
15. ### Don't understand the meaning of ''training a dataset''

Hi, I have a set of data. Those data are based on data mining from my website. I have the number of users per month who go to my website ( X ) , and the time they spent on the website on each webpage ( y ) . Now with this dataset as an example, could you...
16. ### Standardization of a variable

Hello, before making a linear regression, how can I know if I have to standardize a variable?
17. ### analisy of residual

Hi, after a regression is necessary to make an analisy of residuals to know if the model were accurate? ù Noob here, could you explaine me please, why you could do an analisy of residuals and for which purpose does it serve?
18. ### Density probability function considering a subinterval which have different probabilities

Hi I was studying probability density and on a site I read this example Mr. Rossi waits for a phone call from Mr. Bianchi who has announced that he will call, in an unspecified instant, between 4:00 pm and 6:00 pm. Mr. Rossi must however be away from 4.45 pm to 5.00 pm. What is the probability...
19. ### Bernoulli distribution

I am reading the Bernoulli distribution. In the example a dado / dice with 6 faces. By rolling 5 times a dice I have the chance to get 3 twice first, then two different numbers and finally the number ''3''? He uses a Bernoulli distribution to calculate the composite probability. let's...
20. ### What is teh difference between a linear regression and a correlation between 2 variables?

they seem the same thing, can someone to explaine which is the difference?