[quote user="Anonymous"] The Freedman article distributed in class, wikipedia, and class discussions (4/23 @ 1:08:14) have used the economic theories of supply and demand as examples of endogeneity and/or reciprocal causation. Both state that a variable is considered endogenous when it can be predicted by another variable in the model; ...

[quote user="Anonymous"] In the 4/9 class (at the 0:31:42 mark), we were discussing the correlated error model in the multilevel data. The model is good to applied on the hierarchy model, e.g., the firms that share the industrial commonality are correlated, and we have to account the correlation.   One of my research topics is to ...

[quote user="Anonymous"]   Measuring e-Commerce success is a challenging task and very complex entities in the IS field. I am trying to develop a new conceptual model for measuring e-Commerce success and empirically test the proposed model. The proposed conceptual model extends DeLone and McLean's IS success model (2004) by ...

[quote user="Anonymous"] 41214--Fixed effect and random effect and model selection In the class, we discussed fixed effect and random effect and then mixed models. Dr. Westfall suggested that if the number of levels are large, say, larger than 20, the random effect model is more parsimonious with less parameters. Let’s look at two ...

[quote user="Anonymous"] Dr. Westfall, I have a potential study that I would like to explore, but I am not sure if ANOVA or regression is best to use. But I know you stated that ANOVA is a type of regression, and ANOVA is more realistic because it doesn’t assume that all data points fall on a straight line. However, in the context of ...

[quote user="Anonymous"] ID: 43292  As I briefly describe my research, I am interested with the relationship between task structure (independent variable) and individual effectiveness (dependent variable). In other words, this study considers Y = individual effectiveness (we suppose this is from 1 to 10 high), and X = ...

[quote user="hoh"] We have learned about moderator variables and interaction models.  Citing a research study published in Journal of Business Venturing (Zahra and Hayton, 2008), I want to ask about interpretation of interaction regression models with linear effects. In this article, the researchers suggest that the effects of ...

[quote user="Anonymous"] 45297  The concept of heteroscedasticity is one that has been discussed throughout the entire semester. As a matter of fact homoscedastic errors are an important assumption of the classical regression model. The most central theme discussed in this regression class seems to be that the model produces the ...

[quote user="Anonymous"] My question this week relates to the potential problems encountered with using OLS when you have correlated error terms.  I also tried to understand the various ways this correlation typically arises and how to model it to achieve better estimates and correct standard errors.  I specifically reviewed ...

[quote user="Anonymous"] The phenomenon that I am interested in researching is a relationship between corporate social performance (CSP)and corporate financial performance (CFP). Several models have been proposed to explain this linkage, ranging from positive and negative to curvilinear model. For example, scholars argue that ...