You can preview and download the dataset from this tab. The dataset is available in multiple file formats, compatible with most common software packages. You can also view and download the Codebook, which provides information on the structure, contents, and layout of the dataset.
This dataset is designed for teaching difference of means t-test. The dataset is a subset of data derived from the 2008 American National Election Study (ANES2008), and the example tests whether internet access is related to how much people talk about politics. The dataset file is accompanied by a teaching guide, a student guide, and a how-to guide for SPSS.