# Tagged Questions

Questions on the statistical functions of Mathematica.

96 views

### Plotting a frequency function

I have a list of numbers and I want to plot the fraction of numbers >= k against k which will naturally be a decreasing curve. How do I do that?
95 views

### Estimation of vector autoregressive (VAR) process

To estimate 1-dimensional VAR process (which is AR process) you can easily use functions EstimatedProcess or ...
49 views

### What is the meaning of Automatic in goodness of fit test?

I can't find what is the distribution corresponding to the default option in: DistributionFitTest[data, Automatic, "HypothesisTestData"]; Is it N(0,1), uniform?
365 views

### PDF of binomial distribution and mixed binomial distribution

I want to plot the PDF of binomial distributed function and a mixed binomial distributed function, therefore I entered for the binomial distribution function the following: ...
102 views

### Inconsistent DistributionFitTest results?

In pondering this question, I used Mariana's function to generate the following data. ...
165 views

### NExpectation behaves oddly with EmpiricalDistribution

Note: this is fixed in version 9. My question concerns the usage of NExpectation and Expectation and why I see the behavior I ...
174 views

231 views

### How does Mma compute Confidence Intervals?

I am trying to understand how Mma computes the Confidence Intervals after a NonlinearModelFit. Consider the following example: ...
152 views

### How do I select a random sample without replacement? [closed]

What is the module that selects a random sample of size k (without replacement) from a given population of size n, involving the command Subsets.
112 views

### I need a technique for determining and drawing a line where the density in a listplot jumps up suddenly

Basically I have a two dimensional list plot with a bunch of points between the square of (0,0) and (1,1). The y-values of these points are drawn from a uniform probability distribution between 0 and ...
235 views

### Plotting confidence intervals

The documentation for PDF has an example for plotting a confidence interval of a standard normal distribution: ...
126 views

### Calculate the covariance of a large matrix

I have to compute the covariance of 50 very large integer matrices (2500x2000 elements). However, according to my estimation this will take around 10 days. Do you have any ideas how to speed things ...
201 views

### KolmogorovSmirnovTest[] On Frequency Data

I have two observed frequency data, let say f1 = {100, 200, 150, 100, 50}; f2 = {110, 195, 160, 105, 40}; and i want to know whether these random samples belong ...
38 views

### Evaluating a SmoothKernelDistribution at a point

I would like to evaluate the value of the following SmoothKernelDistribution at the location, say, 2.35. What is the right way to do it? ...