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Everything about Correlation coefficient

Numerical measure of a statistical relationship between variables

A correlation coefficient is a numerical measure of some type of linear correlation, meaning a linear function between two variables. The variables may be two columns of a given data set of observations, often called a sample, or two components of a multivariate random variable with a known distribution. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Correlation coefficientA 5-minute orientation
  2. Skim a recent paper: The Matthews correlation coefficient (MCC) should replace the ROC AUC as the standard metric for assessing binary classificationInfluential work since 2022
  3. Pick up a classic book: Measurements of correlation coefficients of vibration on a car body shellThe most-reprinted book on the subject
  4. Read the landmark paper: A Guideline of Selecting and Reporting Intraclass Correlation Coefficients for Reliability ResearchCited 27,527 times
  5. Go sideways: CorrelationA closely related topic
  6. Go sideways: Spearman's rank correlation coefficientA closely related topic

📖 Definitions

Noun Any of the several measures indicating the strength and direction of a linear relationship between two random variables.

🗂️ The subject at a glance

  1. Types

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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