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Analyze a mock public health dataset to uncover trends related to global health metrics like life expectancy, healthcare expenditure, and disease rates. Visualize trends over time and use statistical analysis to find correlations.

Develop a machine learning model using mock customer behavior data to predict whether a customer will churn. Use customer demographics, purchase history, and engagement data to train and evaluate the model.

Use mock product review data to simulate scraping from an e-commerce site. Perform natural language processing (NLP) on the reviews to analyze customer sentiment and identify recurring issues or praises. Build visualizations to display trends and insights.