Your purpose in process analysis is to explain a process so that readers can either do it themselves or understand how it works. Your main point lets your readers know what you think about that process — for example, whether it is easy or complicated.
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A thesis statement for a process analysis usually identifies the process and the point you want to make about it. The thesis should also suggest what you want your readers to know or learn about the process.
In process analysis, include your thesis statement in your introduction so that readers know from the start what the process and the purpose are.