### This month’s Topic Webinar

*with guest instructor Jessica Thomson, Ph.D.*

Correspondence analysis is a powerful exploratory multivariate technique for categorical variables with many levels. It is a data analysis tool that characterizes associations between levels of two or more categorical variables using graphical representations of the information in a contingency table. It is particularly useful when categorical variables have many levels.

This presentation will give a brief introduction and overview of the use of correspondence analysis, including a review of chi square analysis, and examples interpreting both simple and multiple correspondence plots.

Dr. Jessica Thomson holds a PhD in mathematical statistics and currently works as a research epidemiologist for the USDA Agricultural Research Service’s Delta Human Nutrition Research Program. Dr. Thomson has a broad background in statistics, with specific emphasis on nutritional epidemiology as it relates to obesity. Her current projects include the design, implementation and evaluation of nutrition and physical activity interventions targeting the prevention of obesity in adults and children, as well as identification of dietary patterns in nationally representative child datasets.

October 14, 2015 at 3:00pm EDT (GMT -4)

Note: this webinar is only available to Data Analysis Brown Bag members.

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