biserial


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biserial

[‚bī′sir·ē·əl]
(biology)
Arranged in two rows or series.
References in periodicals archive ?
Para la construccion del test-LPHB se han usado tres indices que se focalizan en los items individuales del test (dificultad, discriminacion, coeficiente de punto biserial), dos de ellos se centran en el test (fiabilidad de Richardson y delta de Ferguson), a continuacion se describen:
TABLA 1 Medias, desviaciones estandar y correlaciones punto biseriales de los reactivos de la Prueba de Autoestima para Adolescentes Reactivo N Media 1.
[MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and the point biserial correlation coefficient between the logit and the observed outcome ([r.sub.pbi) is .53.
El coeficiente de correlacion biserial ([r.sub.bis]) se calcula para determinar el grado en que las competencias que mide el test tambien las mide el reactivo.
On this occasion 14 of the 16 point biserial correlations computed across the 30 subjects for each card were positive as predicted (p [less than] .005, binomial test, one-tailed).
El criterio de seleccion de los reactivos fue que cumplieran con los siguientes requisitos: (a) grado de dificultad en un rango de 0.2 a 0.8, con un promedio cercano a 0.5, con lo que se pretende seleccionar aquellos reactivos que, para esta muestra, presenten adecuados indices de discriminabilidad y que la distribucion de los puntajes de los sujetos sea lo mas normal posible; (b) correlacion biserial puntual igual o superior a 0.3; (c) distribucion homogenea entre los distractores y (d) porcentaje de omisiones no mayor a un 20%.
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.
Al calcular la formula 16, para el coeficiente phi biserial ([[fi].sub.bis]), se obtenian valores mayores a 1 en los estudios 6, 7 y 11:
Notes: Uncorrected correlations are point biserial correlations.
For categorical variables Phi Coefficient (2 x 2 table) and Cramer's Phi (larger than 2 x 2 table) were used, and for one continuous and one categorical variable, the point biserial correlation coefficient was used (Lindeman, Merenda, & Gold, 1980).
Item analysis revealed that all items had at least a .30 point biserial correlation with the total score.
Significant point biserial correlation [rpbi (1478) = .3019, p <.01] between FRP and place of residence also indicate that FRP varies significantly according to place of residence (table 4).