Shieh examined the accuracy of Equation 1 for 27 additional conditions and concluded that Equation 1 is "not recommended for precise interval estimation of squared multiple correlation coefficient
in multiple regression analysis" (p.
3) Conceptual skill: Five variables enter into the regression equation* Multiple correlation coefficient
076 QTmax = maximal QT interval duration in all measurable leads, QTc = heart rate corrected, QTm = the mean QT interval duration in all leads, QTd = QT interval dispersion, QTII = the QT interval in lead DII, QTcII = heart rate corrected QT interval in lead DII, T0e = maximal T-wave duration in all measurable leads, Tpe = maximal Tpeak-Tend interval in all measurable leads, Ta = maximal T-wave amplitude in all leads, multiple R = multiple correlation coefficient
, R square = coefficient of determination, adjusted R = the coefficient of determination adjusted for the number of independent variables in the regression model Table 4: Linear regression analysis.
For the full PSAT/NMSQT scale, the addition of a quadratic term improved model fit; however, the effect size was small as indexed by the change in the squared multiple correlation coefficient
(R2) of 0.
Multiple regression analysis was also performed with CF1, CF2, and GR as variables, and SI3 and RT3 as predictor variables, r, R, and r' denote simple correlation coefficient, standard multiple correlation coefficient
, and standard partial regression coefficient, respectively.
1 Summary output of the multiple regression analysis Coefficients ([DELTA]) Symbols Regression Statistics Multiple correlation coefficient
Multiple R Coefficient of multiple determination [R.
is defined as the multiple correlation coefficient
for the model [X.
20 Distribution of the Sample Multiple Correlation Coefficient
From Multivariate Normal Distribution
a) R is the multiple correlation coefficient
of overall tests for each motivational style.
15) Correlations between on- and off-line measurements (as determined by linear regression analysis) and 95% confidence intervals were depicted in graph form; multiple correlation coefficient
The eta coefficient is identical to the multiple correlation coefficient
when the dependent variable is regressed on all the categories of an independent variable.
Also, a multiple correlation coefficient
cannot be calculated for nonparametric correlation coefficients.