Sentence examples for model and normality from inspiring English sources
Thirdly, as noted in [20], for the parametric methods, assuming stationarity for the data, linearity of the model and normality of the residuals can provide only an approximation of the true situation.
The validity of the model assumptions (homogeneity and normality of variances) was controlled by studying the residuals from the fitted models.
The medical model considers psychopathology and normality (i.e. absence of psychopathology) in absolute terms.
Residuals of the regression models were checked and normality was accepted for all of them (data not shown).
This nonlinear isobologram model for binary mixtures can be expressed as [formula: see text] In addition, a Box-Cox transformation to both sides is introduced to improve the goodness of fit and to provide a more robust model for achieving homogeneity and normality of the residuals.
We checked correlations between main effects variables in the final models and evaluated model assumptions (normality, homoscedasticity) by examining plots of predicted values versus residuals and normal probability plots of residuals.
Model assumptions were checked using scatter and normality plots of the models' standardised residuals.
The outcome variables were log transformed to meet the model assumptions normality and the constance of variance.
When summary measures are available, it is customary to model the response by a linear (mixed) model assuming normality and accounting for possible heterogeneity in precision by weighting.
However, a generalized linear model was also estimated to validate the previous results, due to the violation of some of the linear regression model assumptions (normality and homoscedasticity of residuals).
To decrease confounding bias, we performed multivariate analyses: multiple regressions were carried out using a stepwise backward method, after ensuring sample adequacy, linearity of the model, residual normality and non-collinearity of retained items (variance inflation factor <2).
