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Questions tagged [uniform-distribution]

The uniform distribution describes a random variable that is equally likely to take any value in its sample space.

2 votes
1 answer
71 views

How do I measure the regularity of the distribution in a list of binary data?

Suppose I have a list list = [0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1], which gives information about whether a person was sick on a day (1) or not (0), since ...
marvelfab12's user avatar
1 vote
1 answer
28 views

A set of values ​from a discrete uniform distribution is scaled down by the same factor

Use MATLAB's randi function to generate a set of values ​​that conform to discrete uniform distribution, such as {0,1,2,3,4,5}. If this set of values ​​is divided by an integer 10 at the same time, ...
Cathy's user avatar
  • 107
3 votes
1 answer
275 views

Probability algorithm on strings

Let $x$ be any binary string $\in (0,1)^*.$ The majority language is given by: $$\text{MAJ}:=\{x\in (0,1)^*:\sum_{i=1}^ {|x|}x_i>\frac{|x|}{2}\},\text{where $x_i$ is the $i$-th position value(...
D. S.'s user avatar
  • 69
5 votes
1 answer
114 views

Need help in calculating $\mathbb{E}(\frac{1}{x_{(2)}-x_{(1)}}\int_{x_{(1)}}^{x_{(2)}} f(t) \ dt)$, where $x_{(i)}$ are related Beta distribution

Suppose $Y, Z \stackrel{\text{iid}}{\sim}\mathrm{Uniform}(0,1)$. Let $a = g(\min(y,z)),\ b=g(\max(y,z)).$ How can I calculate the expectation $$\mathbb{E}\left[\frac{1}{b-a}\int_a^b f(t) \ dt\right]$$ ...
learner's user avatar
  • 171
2 votes
0 answers
29 views

constant approximation based on "sorted uniform distribution" and beta distribution [closed]

Let $X_1, X_2 \stackrel{\text{iid}}{\sim}\mathrm{Uniform}(0,1)$ and then sort $X_1,X_2$ to get $X_{(1)} < X_{(2)}$. Based on the pdfs of $X_{(i)}$, we know $X_{(1)} \sim \mathrm{Beta}(1,2)$ and $...
learner's user avatar
  • 171
0 votes
0 answers
40 views

Uniform density over 2 segments [duplicate]

Background Let $V_1, V_2 \in \mathbb{R}^2$ be the vertices of a segment and let $z$ be uniformly distributed over that segment. Now consider the random vector \begin{equation*} \begin{aligned} y&=...
matteogost's user avatar
4 votes
1 answer
232 views

Exercise about Order statistics from uniform distribution

I'm trying to solve an exercise about order statistics. The exercise is the following: Let $U_{(1)}< \ldots <U_{(n)}$ be the order statistics from Uniform distribution U(0,1). Show that $(-\log[...
MLe's user avatar
  • 43
0 votes
0 answers
19 views

How to make sense of a uniform distribution over the real numbers (or on some other unbounded set)? [duplicate]

"Pick a random real number," seems innocuous enough. Thinking about the math though, it does not seem to work. Such a CDF would have to have a constant slope yet have $\underset{x\rightarrow ...
Dave's user avatar
  • 65k
11 votes
4 answers
236 views

Upper bound for 1-Wasserstein distance between standard uniform and other distribution on $[0,1]$

I want to use the following metric to measure the distance between the standard uniform distribution and any other probability distribution on $[0,1]$. $$\int_0^1 |F(x) - x| dx$$ $F(x)$ is the cdf of ...
spencergw's user avatar
  • 319
0 votes
0 answers
33 views

Rejection region for the likelihood ratio test (uniform distribution)

Let $x_1 ... x_n$ be sampled from a uniform distribution with $f(x;\theta) = (1/\theta), \theta; >0, x \in [0,\theta].$ After finding the likelihood function for the hypotheses: $H_0 : \theta = \...
Flipp7746's user avatar
1 vote
1 answer
63 views

Find a two dimensional sufficient statistic for $\theta$

Let $\{X_i\}_{i=1}^n$ be conditional independent given $\theta$ with distribution $$p_{X_i | \theta} (x |\theta) = \frac{1}{2i\theta}, \ -i\theta<x<i\theta.$$ Find a two dimensional sufficient ...
Oskar's user avatar
  • 265
0 votes
1 answer
37 views

What is the bias of uniform distribution parameter estimator?

I have a question regarding question 2 of chapter 6 of "All of Statistics" book by Larry Wasserman. let: $$X_1, ... , X_n \sim \operatorname{Uniform}(0, \theta )$$ and let: $$\hat{\theta} = \...
George Wilhelm Hegel's user avatar
3 votes
2 answers
183 views

Long-run average cost for uniform distribution

The lifetime of a device is a continuous random variable having the continuous uniform distribution $\mathrm{Unif}(0,15)$. Suppose that under an age replacement strategy a planned replacement at age $...
waterr's user avatar
  • 41
1 vote
1 answer
28 views

How can I undersample the number of data points that are uniformly distributed on a sphere by keeping the uniform distribution?

Given uniform distributed random numbers on a sphere, how can I undersample it, so reduce the number of data points and obtain a subset which keeps the uniform distribution ? I tried to search on ...
HelpNeederStudent's user avatar
7 votes
1 answer
383 views

Estimation of a uniform distribution corrupted by Gaussian noise

Problem definition I have a dataset composed by $m$ observations $y^{(1)},\dots,y^{(m)} \in \mathbb{R}^2$ generated as follow \begin{equation*}\begin{aligned} y &= z + v \newline z & \sim\...
matteogost's user avatar

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