Questions tagged [weibull-distribution]

Question 1

I'm analyzing a survival dataset with about 50% right-censored observations(censored(1515) - event happened(1481)) using R’s survival package and have encountered a puzzling scenario. I fitted both a ...

Question 2

I'm interested in the conditional expectation of a Weibull distributed random variable $X$ with shape $\alpha$ and scale $\beta$ given it is greater than some value $l$. Section 2.2 of Truncated ...

Question 3

I am performing a generalized extreme value analysis using about 20 years of data sampled every 1 minute. I am doing this in order to predict return levels at e.g. 1-in-50 and 1-in-100 intervals. The ...

Question 4

I am computing the Generalized Extreme Value distribution for a dataset containing about 15 years of data sampled every 5 seconds. I want to estimate the 1-in-50 or 1-in-100 year return level from the ...

Question 5

I am working on survival regression in R using a dataset where individuals are tracked from birth to death. Their health status is classified as either Tumoral or Healthy, under two dietary regimes (...

Question 6

I have a set of machines and I am trying to simulate the occurrence of maintenance jobs for the set of machines. I have a fitted Weibull distribution for the time between occurrences of maintenance ...

Question 7

I have an assignment in which I have to show that Weibull Pareto belongs to exponential family and then mean and variance of term $a(x)$. $g(x)=\frac{\beta c}{x}\{\beta \log (\frac{x}{\theta})\}^{c-1}\...

Question 8

I am trying to test this against various similar looking distributions to find the one which fits best or is least likely to match by random chance. These look log normal, but my attempts to convert ...

Question 9

my model follows Weibull distribution, my question about σ is when we could replace it with one and when we may consider it a scale parameter?

Question 10

I have been using surpyval to fit some calibration data to a weibull distribution. I would like to assess the goodness of fit but I am not sure how to approach this. I had previously used "...

Question 11

I recently found myself answering a question on Stack Overflow about adjusting a dataset to a unknown distribution. Adding my two cents to the community, I have provided a script to draw a Q-Q Plot in ...

Question 12

I asked about this question on Stan forum but no one replied so dual posting here. I'd really appreciate some insight, as I'm completely stuck. I’m trying to do hierarchical survival modeling using ...

Question 13

I am looking for a distribution with a differentiable PDF $f:(0,\infty)\rightarrow (0,\infty)$ for which for any $\delta>1,z>0$, the two following integrals are finite elementary functions of $\...

Question 14

I want to fit Y using M alone I want to also fit Y using M+P ...

Question 15

I would like to ask about estimating parameters of Weibull distribution (a, and b) I am trying to code likelihood of weibull distribution with survival data $(T_i, \Delta_i),$ which I believe is: $(ab)...

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Questions tagged [weibull-distribution]

Weibull AFT Model Fits Well but Schoenfeld Residuals in Cox Model Indicate PH Violation—Why the Contradiction?

Numerically Stable Conditional Expectation of Weibull Distribution

Why does GEV fit sometimes not fit the tails well?

How to get 1-in-100 return period from GEV when using a block length shorter than a year?

Issues with Survival Regression in R: Handling Non-Censored Data and Model Convergence Problems

Simulating machine maintenance occurrences using Weibull distributions

X-Pareto Distribution

What type of distribution is this? Log-normal, Weibull, Gamma, or something else? [closed]

The value of scale parameter σ in accelerated failure time model

Surpyval Weibull goodness of fit

Assessing whether a dataset follows a distribution using Q-Q Plot

Inconsistent posterior from hierarchical survival model

Distribution supported on $(0,\infty)$ for which moments of its truncated distribution are elementary functions of the truncation point and power

Estimation of Weibull parameter In R language [closed]

MLE of weibull distribution with survival data

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