Dr. McNamara is an assistant professor of statistics in the Department of Computer and Information Sciences at the University of St Thomas, St Paul, MN. She received her BA in English and mathematics from Macalester College, and her PhD in statistics from UCLA. Her research interests include statistical computing, statistics education, data visualization, and spatial statistics.
January 24, 2019
Categorical data, called “factor” data in R, presents unique challenges in data wrangling. R users often look down at tools like Excel for automatically coercing variables to incorrect datatypes, but