Statistics for Systems Modeling: Inference, Evidence, Forecasting, R, and Python
Statistics for Systems Modeling examines how data, measurement, variation, uncertainty, and inference support the study of complex systems. This article explains statistics as a modeling language for evidence rather than a set of isolated formulas, connecting descriptive statistics, sampling, estimation, confidence intervals, hypothesis testing, regression, model diagnostics, causal inference, bias, missing data, resampling, simulation, time series, forecasting, prediction error, and responsible interpretation. It also shows why statistical reasoning matters for ecology, climate, infrastructure, epidemiology, economics, public policy, governance, and scientific computing. By combining formal statistical concepts with R and Python workflows, the article frames statistics as a disciplined way to reason from imperfect observations toward credible, transparent, and revisable claims about real-world systems.

