Do you need help with designing a research study or conducting statistics? Research Engineer is the world's first automated decision engine/decision tree for applied research and statistics. Researchers of all levels of expertise can use the Research Engineer application to make the correct decisions related to answering their research questions. Decision engines related to research designs, measurement of variables, statistical power, sample size, database management, statistics, evidence-based medicine, epidemiology, diagnostic testing, surveys, and psychometrics exist in Research Engineer. The methods of conducting and interpreting over 50 statistical tests in SPSS are presented.