Professional statistical modeling prompt. Guides users through central bank data collection, denomination distribution assumptions, damage/collection rate corrections, confidence interval calculations to estimate global million-denomination banknote circulation, with error analysis and sensitivity testing suggestions, suitable for economic research or data science practice.
I need help calculating how many million banknotes are in use worldwide. Please provide: 1) data source recommendations (central banks/international organizations) 2) estimation model framework 3) key assumption explanations 4) uncertainty handling methods.