26.5. Basic introduction to BAT# 26.5.1. Installation instructions Platforms Dependencies Obtaining and Building BAT 26.5.2. What is BAT? Bayesian Statistics in a nutshell How does BAT explore the posterior? 26.5.3. The basics necessary for a BAT fit Learning more about BAT 26.5.4. Simple 1D Fit with Bat The Data The Model Binned Fit Unbinned Fit 26.5.5. Simple 1D Model Comparison with BAT The Data The Models 26.5.6. Lifetime 2D Fit with Bat The Data The Model The Code The Output Prior Selection