相关系数

相關係數，又称作 關聯係數（英語：）是一種相關程度的測量，在統計學上的意義是兩個變數之間的關係。[1]關係係數與「皮尔逊积矩相关系数」並不相同。英国数学家法蘭西斯·高爾頓最先发展了相关概念。

参考文献
  1. . NCME.org. National Council on Measurement in Education. [April 17, 2014]. （原始内容存档于2017-07-22）. correlation coefficient: A statistic used to show how the scores from one measure relate to scores on a second measure for the same group of individuals. A high value (approaching +1.00) is a strong direct relationship, values near 0.50 are considered moderate and values below 0.30 are considered to show weak relationship. A low negative value (approaching -1.00) is similarly a strong inverse relationship, and values near 0.00 indicate little, if any, relationship.
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