Excellent Analytical Consult

12/03/2026

Which econometrics model should we use when there is a mixture of I(1) and I(2) variables

20/09/2025

15/06/2025

Understanding and Solving Multicollinearity Problems in Regression Analysis

Regression analysis remains one of the most powerful and widely used statistical tools across disciplines such as science, economics, business, and social research. It provides valuable insights into the relationship between variables, guiding data-driven decision-making and forecasting. However, while regression offers significant potential, its effectiveness heavily depends on the underlying assumptions being met. One of the most critical yet often overlooked challenges in regression analysis is the issue of multicollinearity, a condition where two or more independent variables in a model are highly correlated.

Multicollinearity can severely distort the estimation of regression coefficients, leading to unreliable and misleading interpretations. In practice, most real-world datasets exhibit some level of collinearity among predictor variables. When this collinearity becomes strong, it causes problems such as inflated standard errors, unstable coefficient estimates, and ultimately a near-singular or singular matrix that is not invertible—since the determinant becomes zero. This results in spurious regression outputs with large variances and weak explanatory power.

Failing to detect and correct for multicollinearity can render a regression model practically useless, especially when used for policy decisions, scientific inference, or strategic business planning. Therefore, it is essential for analysts, researchers, and decision-makers to understand how to identify, assess, and solve multicollinearity problems effectively.

This training workshop is designed to equip participants with practical techniques to detect and address multicollinearity in regression models. Attendees will gain hands-on experience using statistical tools and real datasets to diagnose the issue and apply appropriate remedies. Join us to strengthen your analytical skills and ensure the reliability of your regression-based insights.

Excellent Analytical Consult

28/05/2025

Symbolic regression search within the Mathematical function space and fit the relationship between data with the best function

28/05/2025

I used symbolic regression to model food prices in Nigeria. Compared with other ML such as RF, DT and NN, SR outperformed them.

27/05/2025

Warm wishes to all the wonderful children on Children's Day! May your day be as bright and beautiful as you are. Keep exploring, learning, and growing. You are loved and cherished.

Excellent Analytical Consult

26/05/2025

Machine learning techniques are classified into White box and Black box

26/05/2025

The black box property of machine learning can now be solved by Explainable AI tools such as LIME and SHAP

22/05/2025

Research writing might be tedious (no doubt in that), but never select a topic to impress having in mind that someone else has never done it before.

The relevance of research is the problem it is solving, which is evident from the gap identified after carrying out literature review.

Therefore, to make your research relevant, carefully conduct an extensive literature review to have the knowledge and understanding of what has been done, what is yet to be done and what your study will focus that can add to the existing body of knowledge in that area.

22/05/2025

Research writing might be tedious (no doubt in that), but never select a topic to impress