...I have a PhD in Economics and for my dissertation (and subsequent publications) I used SAS to estimate the parameters of NonLinear Models. I have a PhD in Economics with field work in Econometrics, which means that I have taken 5 graduate level courses and passed a comprehensive exam. I have a PhD in Economics with a focus on econometrics, which is based on linear algebra. (read more)
...I have been helping students prep for the GRE for 3 years. I have been helping students prepare for standardized tests for the past 15 years. I have used SPSS at work for the past 10 years and have helped both students and professionals use SPSS for the past 5 years. (read more)