R for Data Science

r4ds.hadley.nz ↗

A practical R workflow for transforming and visualizing data

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SI Score: 75/100
Pricing: Free AI reading, not confirmed
Free plan: Yes AI reading, not confirmed
Sign-up required: Not confirmed

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Answers use saved listing facts and recorded sources.

What it does

R for Data Science teaches data import, transformation, visualization and reproducible analysis through an online book.

Follow the workflow from getting data into R to making it useful for analysis. The book joins data structure and plotting skills rather than teaching them as isolated commands. Work with a small dataset alongside the examples to keep each transformation visible. This is the second edition. The online book remains free and uses CC BY-NC-ND 3.0; a physical edition is a separate purchase.

Sources

R for Data Science (2e) (Oct 26, 2026)

SI Score

75/100

#25 in Learn to Code

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 75

Evidence

Importing data, structuring and transforming it, then plotting and producing reproducible analysis gives a concrete input-to-output learning workflow.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

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Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

r4ds.hadley.nz/
- PricingAI reading, not confirmedChecked Oct 26, 2026
  The official introduction states that the website is and will remain free.
- Free planAI reading, not confirmedChecked Oct 26, 2026
  The introduction explicitly states that the website is and will remain free.
- Product usefulness evidenceChecked Oct 26, 2026

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