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correlation coefficient

correlation coefficient

2 6.1
A number between -1 and +1 that shows how strong and which way two things are related
  • noun
  • /ˌkɔːrəˈleɪʃən koʊˈɛfɪʃənt/
  • Specialized
translation icon : coeficiente de correlación
  • In their study, they found a correlation coefficient of 0.85, suggesting a strong positive relationship between exercise and heart health.
  • Pearson correlation coefficient
  • intraclass correlation coefficient
  • product correlation coefficient

And so he, he was looking at student exams and things and he invented the correlation coefficient essentially.

Examples

  • The relationship between in-class texting behavior and final grade was investigated using the Pearson product-moment correlation coefficient.

    Academic text (2013)
  • The relationships between variables are shown in Table 2, which reports the Pearson correlation coefficients.

    Academic text (1992)
  • So we have the sign of a times the correlation coefficient of X with Y.

  • And now what I did was I plotted out the correlation coefficients here.

  • Thus, given the tremendously complex nature of effective instruction, even correlation coefficients of moderate strength may be important.

    Academic text (1991)
  • The strongest predictors were determined by correlation coefficients for independent variables.

    Academic text (2011)
  • For the three AFMA Centers, a sample correlation coefficient of -0.136 was obtained.

    Academic text (1992)
  • Pearson Product Moment correlation coefficients were generated to establish bivariate relationships between variables.

    Academic text (2008)
  • To examine the relationship between riddle type and reading comprehension, we computed correlation coefficients.

    Academic text (2013)
  • The researcher calculated the correlation coefficient to understand the relationship between study time and exam scores.

Synonyms

correlation
vscorrelation coefficient
  • Specialized
50 4.9

A number from -1 to 1 that shows how two things change together

focuses on the relationship specifically between two variables
coefficient of correlation
vscorrelation coefficient
  • Specialized
6.8

A number between -1 and 1 that shows how strongly two things change together

is the identical numeric measure but expressed with the alternative phrase
tetrachoric correlation coefficient
vscorrelation coefficient
  • Specialized
9.9

A number estimating how strongly two yes-no variables are related

measures relations directly for observed continuous variables without that dichotomy assumption
biserial correlation
vscorrelation coefficient
  • Specialized
9.9

A measure that shows how a number like a test score relates to a two-value category like pass or fail

measures relations between two continuous variables rather than mixed types
multiple correlation coefficient
vscorrelation coefficient
  • Specialized
9.6

A number that shows how well several things together predict one result

describes a single numeric relation between two variables, not combined predictors

Surface Forms

Morphology

correlation + coefficient

The meaning is directly derivable from combining 'correlation' (a measure of relationship) with 'coefficient' (a numeric factor), so a learner who knows both constituents can infer it denotes a numeric measure of the relationship between variables. Although technical, the noun+noun composition is compositional and follows common cross-linguistic patterns, making it morphologically transparent.

Etymology

The term correlation coefficient combines correlation (how two things move together) and coefficient (a single number that measures it). Imagine two dancers: if they move exactly together the number is +1, if they move opposite the number is -1, and if they move without a pattern the number is about 0, so the term means 'a number that shows the strength and direction of a relationship'.