About Marissa Duvall
Dr. Marissa Duvall holds a PhD in Statistics and specializes in quantitative data analysis for students at all academic levels. With expertise in hypothesis testing, regression analysis, and structural equation modeling (SEM) using SPSS, SPSS-AMOS, R, Python, and Stata, she has successfully guided over 400 students in analyzing and interpreting their research data.
Recent Articles
How to Do a Normality Test in SPSS
Before you run many statistical tests in SPSS, you may need to check whether your data are approximately normally distributed.…
How to Reverse Code in SPSS
Reverse coding is one of the most common data preparation steps in SPSS, especially when working with surveys, questionnaires, and…
How to Report Descriptive Statistics in APA
Descriptive statistics are often the first results you report in a dissertation, thesis, research paper, or class project. They help…
