Tag Archives: Correlation and dependence

Correlation, filtering, systems and degrees of freedom

Guest post by Richard Saumarez Correlations are often used to relate changes in climate variables in order to establish a potential relationship between them. These variables may have been processed in some way before they are correlated, possibly by filtering … Continue reading

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Posted in Educational opportunity, Science | Tagged , , , | 128 Comments

The ‘correlation is not causation’ hockey stick

http://books.google.com/ngrams/graph?content=correlation+is+not+causation&year_start=1800&year_end=2008&corpus=0&smoothing=3 Mike Lorrey writes- PAY ATTENTION CLIMATE ALARMISTS: “The phrase ‘correlation does not imply causation’ goes back to 1880 (according to Google Books). However, use of the phrase took off in the 1990s and 2000s, and is becoming a quick … Continue reading

Posted in Curious things | Tagged , , , | 127 Comments

Lucia takes on the Gergis et al hockey stick screening fallacy

This is an excerpt of a larger post that deserves the wider attention WUWT can bring to it. The image at left is from my article: A look at treemometers and tree ring growth – Anthony Screening: Now with good+bad treenometers. … Continue reading

Posted in Gergis et al | Tagged , , , , , , , | 29 Comments