1. A method of automatically generating statistical models for a dataset, comprising: at a computer system having one or more processors and memory storing programs executed by the one or more processors: receiving a user description of a graphical view of a dataset, wherein the user description specifies a graphical relationship between a first field and a second field of the dataset in the graphical view; determining a set of data properties for each of the first and second fields; automatically generating one or more statistical models of the dataset in accordance with the data properties of the first and second fields and data values associated with the first and second fields in the dataset; and rendering at least one graphical representation of the one or more statistical models in the graphical view of the dataset.