Max Pierini

4 Questions 17 Answers 0 Followers

Questions related from Max Pierini

Correlation between workers' health and circular deviation of work shifts?

Is there any known correlation and/or prooved cause-effect relationship between highly irregular work shifts' circular deviation (dispersion metric in Circular Statistics) and workers'...

06 May 2023 7,334 4 View

Normal approximation of the ratio of Normally distributed random variables sums?

Given 𝑛 independent Normally distributed random variables 𝑋ᵢ ∼ 𝑁(𝜇ᵢ,𝜎²ᵢ) and 𝑛 real constants 𝑎ᵢ∈ℝ, I need to find an acceptable Normal approximation of the distribution of 𝑌 random variable...

19 March 2023 9,173 4 View

How to properly evaluate new continuous diagnostic test against a dichotomous gold standard?

Let us suppose we have a new cheap and simple diagnostic test we want to evaluate against the expensive and complex gold standard for a highly lethal disease. The gold standard test is...

25 November 2021 8,274 22 View

SARIMA: heteroskedasticity in a time series, Breusch-Pagan or Goldfeld-Quandt?

I want to fit a SARIMA model on a time series, daily sampled. The time series has a 7 days seasonality and, over a moving 7 days window, the variance increases with the mean. With a...

28 March 2021 6,466 5 View