biserial


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biserial

(ˌbaɪˈsɪərɪəl)
adj
in two rows
References in periodicals archive ?
Valores de indices para test-LPHB Indices para item rango Se LPHB y para todo el test espera N=63 Dificultad de [0,1] [mayor que o igual a] 0,3 0.60 item, P Discriminacion [-1,1] [mayor que o igual a] 0,3 0.60 de item, D Punto biserial, [-1,1] [mayor que o igual a] 0,2 0.38 [r.sub.pbs] (Consistencia-item) Kuder-Richarson, [0,1] [mayor que o igual a] 0,7 0.73 (Confiabilidad/test) Delta Ferguson, [0,1] [mayor que o igual a] 0,9 0.94 (Discriminatorio/test) Fuente: Autor.
Discrimination index (DI), also called point biserial correlation (PBS), describes the ability of an item to distinguish between high and low scorers.9 It ranges between -1.00 and +1.00.
El resultado de este analisis permitio observar que los veintiun reactivos de la escala, presentan coeficientes de correlacion punto biserial superiores a 0.20 y una correlacion promedio de 0.53, valores aceptables de acuerdo con diversos sistemas de referencia.
The members of this genus (formerly known as Glyphidodontops Bleeker, 1877) are relatively elongate (2.1-2.7 in SL for most species, although the complex of species treated herein usually 1.9-2.2 in SL) pomacentrids, with smooth preopercular and suborbital margins, and most species possess biserial dentition.
The point biserial correlation between the two dominance estimates was significant (r=0.375; p<0.005).
A Pearson r correlation indicated the strength of significant relationships between developmental status and efficacy (r = -.46, p [is less than] .001) and between developmental status and performance (r = -.27, p = .01) (Note: Pearson r is mathematically equivalent to a point biserial r when the second variable is dichotomous).
However, as the dependent variable is binary, and the logit score is a continuous variable, to allow comparison with personnel research which assesses validity in terms of the validity coefficient r, the (conservative) point biserial correlation coefficient ([r.sub.pbi) for the model is also provided (Guilford & Fruchter, 1984).
[r.sub.pbis] = [[[barra.x].sub.1] - [[barra.x].sub.0]/[S.sub.x]] x [raiz cuadrada de [n.sub.1][n.sub.0]/n(n - 1)] Dos indicadores mas de la efectividad discriminativa de un reactivo son el punto de correlacion biserial y el coeficiente de correlacion biserial, a los cuales se les llama coeficientes de discriminacion.
A point biserial correlation was used to test significance of the relationship between the level of family stress scores and perception of pregnancy ratings (rpb = .13, p = .22).
For each card a point biserial correlation was computed between the selection (1 or 0) and the inspection time across the 30 subjects.
The t-test of 7.17 converts to a point biserial correlation of .47.
The third column of Table 3 presents the average item difficulty of each of the subtests, and the fourth column presents the average item-total, or point biserial, correlations for each subtest.