2026-10-22
Academia Stack Exchange is a Q&A site in the Stack Exchange network dedicated to academic life, serving users at every level from students to senior researchers. It answers questions about "how to do academia": graduate study, writing and publishing, peer review, the academic job search, relationships between advisors and students, and similar topics. It does not answer questions about specific subject content, and it does not choose schools or journals for people. This article is based on the official Help Center.
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Europe PMC (europepmc.org) is a free biomedical literature database maintained by EMBL-EBI: it includes all PubMed abstracts, shares full texts with the US PMC, and additionally integrates preprints, patents, clinical guidelines, and funding information. This article is based on the official manual and API documentation.
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The Department of Statistics at Pennsylvania State University makes the notes for several of its courses freely available on STAT Online (online.stat.psu.edu) under the CC BY-NC 4.0 license. The courses include STAT 200 Elementary Statistics, STAT 414 Probability Theory, STAT 501 Regression, STAT 502 Analysis of Variance, and STAT 505 Multivariate Statistics, among others.
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