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Statistical models attempt to describe and quantify relationships between variables. In the models presented in this chapter, there is a response variable (sometimes called dependent variable) and at least one predictor variable (sometimes called independent or explanatory variable). When investigating a possible cause-and-effect type of relationship, the response variable is the putative effect and the predictors are the hypothesized causes. Typically, there is a main predictor variable of interest; other predictors in the model are called covariates. Unknown covariates or other independent variables not controlled in an experiment or analysis can affect the dependent or outcome variable an...
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Science Inquiry, Argument and Language describes research that has focused on addressing the issue of embedding language practices within science inquiry through the use of the Science Writing Heuristic approach. In recent years much attention has been given to two areas of science education, scientific argumentation and science literacy. The research into scientific argument have adopted different orientations with some focusing on science argument as separate to normal teaching practices, that is, teaching students about science argument prior to using it in the classroom context; while others have focused on embedding science argument as a critical component of the inquiry process. The cu...
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February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index