point biserial correlation coefficient

[¦pȯint ‚bī¦sir·ē·əl ‚kär·ə′lā·shən ‚kō·ə‚fish·ənt]

(statistics)

A modification of the biserial correlation coefficient in which one variable is dichotomous and the other is continuous; a product moment correlation coefficient.

References in periodicals archive ?

The point biserial correlation coefficient (rpb) will measure the relationship of correct or incorrect answer with overall score and it ranges from 0 to 0.4.

EFFECTIVENESS OF MCQS IN ASSESSING HIGHER ORDER COGNITION

The evaluation of the integrative neuropsychological parameters of subcortical-frontal function as disease liability factors was defined by calculating the point biserial correlation coefficients on the basis of the means and standard deviations of patients' and healthy controls' features, taking into account the prevalence of schizophrenia in the common population.

Point biserial correlation coefficients of the integrative characteristics of the left and right subcortical-frontal regions with liability to schizophrenia reached 0.39 [+ or -] 0.07 and 0.28 [+ or -] 0.08, respectively, as shown in Table 2.

Integrative neuropsychological characteristics of subcortical-frontal brain regions as a schizophrenia liability factor