Graphical Methods for Exploratory Multivariate Longitudinal Data Analysis
نویسنده
چکیده
This paper describes direct manipulation and dynamic graphics for analyzing multivariate longitudinal data. Longitudinal data measures individuals repeatedly in time, perhaps at irregular and unequal time points. There is an emphasis on studying the individual patterns as well as mean trends because we can. Static plots of individuals are messy and often unreadable because there are many overlapping lines. Direct manipulation graphics allow patterns amongst the individuals to be explored. Dynamic graphics enable patterns in multivariate responses to be viewed. Three very different data sets are used to illustrate the methods.
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