no code implementations • 11 May 2021 • Rustam Ibragimov, Paul Kattuman, Anton Skrobotov
Following the approaches, in particular, a robust large sample test on equality of two parameters of interest (e. g., a test of equality of inequality measures in two regions or countries considered) is conducted as follows: The data in the two samples dealt with is partitioned into fixed numbers $q_1, q_2\ge 2$ (e. g., $q_1=q_2=2, 4, 8$) of groups, the parameters (inequality measures dealt with) are estimated for each group, and inference is based on a standard two-sample $t-$test with the resulting $q_1, q_2$ group estimators.
no code implementations • 5 Sep 2020 • Walter Distaso, Rustam Ibragimov, Alexander Semenov, Anton Skrobotov
The paper focuses on econometrically justified robust analysis of the effects of the COVID-19 pandemic on financial markets in different countries across the World.
no code implementations • 1 Jun 2020 • Rustam Ibragimov, Rasmus Pedersen, Anton Skrobotov
The approaches are based on robust $t-$statistics tests and new results on their applicability are presented.
no code implementations • 1 Jun 2020 • Rustam Ibragimov, Jihyun Kim, Anton Skrobotov
To relax the exogenous volatility assumption, we propose another method which relies on the nonparametric correction of volatility.