Can you provide me with a detailed account of your experience in handling complex data analysis tasks, including the tools and techniques you have used? Your response should contain at least 3 placeholders represented by square brackets, such as [tool], [technique], and [data_set]. Highlight at least 2 sections in your answer with markdown, i.e., *highlighted section*. Your answer must contain a title, wrapped in double angular brackets, such as <<Experience in Complex Data Analysis>>.

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