They might also be interested in similar books about mathematical statistics that are available legally. I can list those as alternatives. It's possible they want to understand the concepts through a PDF, so providing study resources could be helpful.
The phrase does not correspond to an official or widely known academic work, book, or verified PDF. It is possible the title is a metaphorical or aspirational reference to the beauty and accessibility of mathematical statistics, rather than a direct citation. They might also be interested in similar books
Alternatively, could it be a PDF that's been shared on the internet, maybe a lecture or a blog post? Sometimes people create PDFs with such titles. Let me consider if there are any PDFs that are freely available. I remember that some university lecture notes or open-access resources have titles that sound something like that. But without an exact match, it's hard to verify. The phrase does not correspond to an official
