# Tagged Questions

For questions about distributions built-in in Mathematica, and functions that operate on them. Also includes questions about defining your own distributions.

49 views

### Error message when exporting plot as XLS file

I imported data from excel which has 300 data (which are change in CDS spread). I want to compute corresponding CDF for the data using kernel density estimation. I get the CDF plot but cannt get the ...
108 views

### kernel density estimation

I am trying to compute CDF of historical data ( weekly change in CDS spread) using kernel density estimation. The original data has 300 observation. I uploaded data from excel ...
72 views

### How should I iteratively refine a MixtureDistribution?

I am trying to find a stopping time for a randomized simulation such that say 95% of trials that will be successful will have already finished. I would like to do this by creating and then refining ...
52 views

### Documentation for the Bounded option of SmoothKernelDistribution

I have found the Bounded option useful in the SmoothKernelDistribution function, but I can't find any documentation for exactly ...
113 views

### How does Matematica compute the CDF of the binomial distribution?

I want to know, how Mathematica actually implements the cumulative distribution function of the binomial distribution. Which algorithm does Mathematica use to compute ...
404 views

### Fitting and plotting Weibull distribution

How can I find the best fitted 2-parameter Weibull's distribution (PDF) to describe my data? How can i plot my data and estimated distribution all in one graph? How can I show/compare results of ...
109 views

### Dirichlet marginals - why does Mathematica not give the *Kth* marginal?

Observe: MarginalDistribution[DirichletDistribution[{a, b, c, d}], #] & /@ Range@4 {BetaDistribution[a, b + c + d], BetaDistribution[b, a + c + d], ...
392 views

### Random non-overlapping disks in a square

I've found a nice code snippet by @belisarius from this question, that I'll reproduce here for reference: ...
60 views

### How to get DistributionChart to show normalised densities?

I am having some issue getting DistributionChart to show bin widths as expected, or perhaps it is in my interpretation of the plots. I have four data sets, all of the same length, and plot them in ...
108 views

### TargetFunctions option in FindDistribution yields error

I have some data set that I am trying to find the maximums . I figured I could do this by fitting the many peaks of the dataset to Gaussian distributions and then finding the peaks of this data from ...
262 views

### Finding skewness and kurtosis numerically in Mathematica

I have a function given by ...
221 views

### How can I draw a box with moving particles inside and a hole in one side? [closed]

The idea is to create a simulation for ideal gas motion in a container that have a hole and then find the speed distribution for the gas particles that leave the box through the hole. I have a ...
185 views

### Confusion with SplineFit (Angle calculation)

This question is continuation to this other one I am creating polymers (where each monomer is of equal length) using this method: ...
126 views

### Efficient Sampling of A (Countable) Discrete Distribution

I have a sequence of positive terms $(a_n)$, for which $\sum_{n=1}^\infty a_n = A <\infty$, and wish to take a psuedo-random sample from the discrete probability distribution \...
115 views

### P-Values are inconsistent when using DistributionFitTest repeatedly

I am attempting to become more familiar with the DistributionFitTest, specifically the distributions it yields and their fittedness. What I have found is that when I generate random data, fit it, and ...
131 views

### How to simplify and evaluate Integral with lots of DiracDelta dists

I have a question about an Integrals which I can do by hand but I want to implement this Integral in Mathematica. Actually it is the definition of a 2 Particle Phase Space. The Expression is the ...
105 views

Observe: ...
218 views

### Mathematica equivalent of qnorm or invNorm

In R and TI-89 you can do qnorm(prob, mu, sigma) or invNorm(prob, mu, sigma) to get a value of ...
212 views

### Prime number The Ulam spiral [closed]

I want a simple method of visualizing the prime numbers that reveals the apparent tendency of certain quadratic polynomials to generate unusually large numbers of primes. I was able to display the ...
81 views

### Performance of a bootstrap - time of computation not linear with number of iterations

I'm doing a bootstrap based on this thread with the following code (file.txt here): ...